You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you at present?

USER: My name is Gregory Harris. I would like to cancel my reservation, could you help me out?

ASSISTANT: Sure, we are here to help you with cancellation.

USER: Sure.

ASSISTANT: Please wait for a couple of minutes.

USER: Ok.

ASSISTANT: Thanks for your time, there was no reservation found on the name of Gregory Harris.

USER: That's ok. Thank you for your time.

ASSISTANT: Thank you for opting our service.