You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,.

USER: I am Thomas Harris.

ASSISTANT: On what way, can I aid you today?

USER: I need to cancel my recent reservation due to postpone of my marriage to some other month. Could you please help me in doing that?

ASSISTANT: Sure, I will help you with cancellation.

USER: Thank you.

ASSISTANT: Please wait, let me check your reservation status.

USER: Sure.

ASSISTANT: Thanks for waiting. Sorry Thomas, No active reservation is found under yur name to cancel it.

USER: No problem, thank you for your information.

ASSISTANT: Thanks for visiting us.