You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER:  I have to cancel my flight ticket that I unable to travel to meet my sister that she came to meet me, can you help me in that one?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know your good name please?

USER: Sure, my name is Gregory Evans.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Thank you for being patience.No reservation was found on your given name.

USER: Ok, not an issue. Thank you for your service.

ASSISTANT: Thank you for reaching us.