You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I want to cancel my reservation as my research work got postponed. Please cancel the reservation made by the name William Moore.

ASSISTANT: Sure, I would be happy to help you.

USER: Ok.

ASSISTANT: Wait for some time I will check and get back to you.

USER: Sure.

ASSISTANT: There is no reservations found on your name.

USER: Ok fine. Thanks for your response.

ASSISTANT: Thanks for choosing us.