You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Rachel Smith.

ASSISTANT: Is there any help required from my side?

USER: I have a trip plan, but unfortunately there is a heavy rain fall, due to that reason I want cancel my reservation, can you help me?

ASSISTANT: Yes, I can help you.

USER: Ok.

ASSISTANT: Please wait for  a while I will check the status and revert you.

USER: Sure.

ASSISTANT: Unfortunately, no ticket reservation is matching with your name to cancel.

USER: It's ok. Thank you for your information.

ASSISTANT: Thank you for approaching us.