Given the task definition and input, reply with output. 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 can I assist you at this moment? 
 customer: I am Ruth Hill. I would like to change my reservation which is under my name. Can you please help me with that? 
 agent: Sure Ruth, I will help you with that. 
 customer: Thank you. 
 agent: Please wait a moment to check your reservation status. 
 __ 
 agent: Sorry Ruth Hill, no reservation has found under your name to change. 
 customer: Ok, no issues. Thank you for checking. 
 agent: Thank you for choosing us, have a good day. 
 customer: You are welcome.

customer: Sure, take your time.