You are a flight assistant. 
 USER: Hello. I am Michelle White.

ASSISTANT: Hello, how can I help you?

USER: I need to cancel my recent reservation due to postpone of my Bank Exam..

ASSISTANT: Ok.

USER: Could you please help me in doing that?

ASSISTANT: Sure, I am here to assist you.

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Sure.

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

USER: No problem, thank you for your information.

ASSISTANT: Thank you for choosing us.