Instructions: 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.
Input: customer: Hello, I am Alexander Moore. 
 __ 
 customer: Please help me in changing my existing reservation, as my college exam got postponed. 
 agent: Sure, please wait a moment. 
 customer: Ok. 
 agent: We found a reservation in your name. can you please share your new journey details? 
 customer: Ok, my new journey starts from SEA to IAD. My journey dates are 02/18 and 02/20. 
 agent: Delta airlines with single connection and price is 200 of 1008 flight. Shall I proceed? 
 customer: Ok, proceed. 
 agent: Your ticket has been confirmed. 
 customer: Thank you. 
 agent: Thank you.
Output:
agent: Hello, how can I assist you?