You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: My exams got postponed due to some problems in college, can you please help me in changing the reservation?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: May I know your good name please?

USER: I am Robert Edwards.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Thanks for your time, there is no reservation found in your name.

USER: Ok, no problem. Thank you for your quick response.

ASSISTANT: Thank you for choosing us.