You will be given a definition of a task first, then some input 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. 
 customer: I am Gregory Walker here. 
 __ 
 customer: I am planing to meet my friend in New York EWR. Can you please help me in booking a flight ticket from SEA? 
 agent: May I know your planned travel dates please? 
 customer: My journey dates are from June 19 to June 21. 
 agent: Ok, please wait for a while. 
 customer: Sure, I will wait. 
 agent: Delta airlines is providing a flight on that route with ticket fare of 100, shall I proceed for booking? 
 customer: If it is a connecting flight, you can proceed with booking. 
 agent: I have successfully booked your ticket with flight-1001, have a safe journey. 
 customer: Thank you for helping me. 
 agent: Thank you for choosing us.
Output:
agent: How can I assist you today?