Teacher: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.
Teacher: Now, understand the problem? Solve this instance: customer: Hello. 
 agent: Hello, how may I aid you? 
 __ 
 agent: Sure, I am here to help you. 
 customer: Thank you. 
 agent: May I know your good name please? 
 customer: Sure, my name is Sarah Nelson. 
 agent: Please wait for a while. 
 customer: Sure. 
 agent: Sorry to inform that, there is no reservation found on your name. 
 customer: No problem, thank you for information. 
 agent: Thanks for reaching us.
Student:
customer: I want to cancel my reservation as I am busy and can not go to the trip. Can you please help?