You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Kevin Mitchell. I need to cancel my recent reservation due to postpone of my exam. Could you please help me in doing that?

ASSISTANT: Sure, we are here to help you. Wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting there is no reservations found on your name.

USER: No problem, thank you for your information.

ASSISTANT: Thanks for choosing us.