In this task, you're given a dialogue between a customer and a flight booking agent with a gap in the conversation. Your job is to find the answer of the previous dialogue. Avoid using irrelevant extra information while creating the answer. The answer should be relevant to the question before the blank. If you fill the blank with a question, it should have an answer from the agent in the given dialogue. Fill the gap marked with underline.
One example: customer: Hello. 
 agent: Hello. How may I help you? 
 customer: I would like to do some changes in  my existing reservation, can you please help me out? 
 agent: Sure, I will help you in booking. May I know your name to proceed further? 
 __ 
 agent: Alexander Hernandez, regret to inform that there is no active reservation found under your name to amend. 
 customer: That's ok, no problem. Thank you for the information. 
 agent: Thank you for reaching us.
Solution is here: customer: Sure, myself Alexander Hernandez.
Explanation: This is pretty forward, based on the answer after the blank, the answer would be to know the name of the person, and the name is mentioned in the next dialogue to the blank

Now, solve this: customer: Hello. 
 __ 
 customer: My name is Gary Walker. I am searching for the flight which is departing in the morning time from Denver, can you please help me to book the flight ticket? 
 agent: Sure, I will help you to book a flight ticket. Can you please share me your travelling dates? 
 customer: Thank you for accepting my request. My planned travelling dates are Nov/16 and Nov/18. 
 agent: Ok, may I know your airport codes? 
 customer: The origin and destination airport codes are DEN and IAH. 
 agent: Please give me a moment. Here, I found a flight for you with single connection and ticket fare is 300 in economy class. 
 customer: I am looking for a business class flight which is returning in the evening time. So, please recheck for that. 
 agent: Sorry, no flights are available on your route. 
 customer: It's ok, not a problem with that. 
 agent: Thank you for choosing us. 
 customer: Thank you for your time. 
 agent: Welcome, have a nice day.
Solution:
agent: Hello. How can I help you?