You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am planning for some other trip, so I need to cancel my previous ticket. Can you help me in cancelling?

ASSISTANT: Sure, please provide your name?

USER: My ticket is booked with name Mary Lee, so please check with this name.

ASSISTANT: Sure. There were no reservation found on your name.

USER: It's ok, anyway's thank you for checking.

ASSISTANT: Thank you for availing with us.

USER: You are welcome.