You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you for the day?

USER: I want to cancel my reservation as I have planed another trip with my girl friend. So, please cancel it?

ASSISTANT: Sure, can you please provide your name to check the reservation?

USER: Paul Miller is my name.

ASSISTANT: Ok, please give me a minute.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found in the database.

USER: Ok, may be I have done with some other agency. Thanks for the response.

ASSISTANT: Thank you for approaching us, have a pleasant day.