You will be given a definition of a task first, then an example. Follow the example to solve a new instance of the task.
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.

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: customer: Sure, myself Alexander Hernandez.
Why? 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

New input: customer: Hello, David Carter here. 
 agent: Hello. How can I aid you? 
 customer: I planned to attend for a seminar in DTW, can you help me to book a flight ticket from ORD? 
 agent: Please let me know your travelling dates. 
 customer: I would like to travel on 11/21 and 11/23. 
 agent: Please wait for a minute. 
 customer: Sure. 
 agent: Thanks for being patient. We found a Frontier airline.flight number:1016 and the price is 100. 
 customer: Ok, please confirm my booking. 
 __ 
 customer: Thank you for your assistance.
Solution:
agent: Your flight ticket has been confirmed. Thank you for opting us.