You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you today?

USER:  I need to cancel my recent existing reservation due to postpone of cricket tournament. Can you cancel my reservation?

ASSISTANT: Sure, May I know your name?

USER: I am Raymond Thompson.

ASSISTANT: Thank you for your name. There is reservation found on your name. Shall I proceed with cancelling.

USER: Yes, please.

ASSISTANT: Thank you for choosing us, your ticket has been cancelled.

USER: Thank you for the service you have done.