You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what help are you seeking for?

USER: I had a plan to travel to mexico, due to climatic change I could not make it to the airport. So I want to cancel the flight ticket. Can you help with it?

ASSISTANT: Ok, please help me with your name.

USER: My name is Jack Carter.

ASSISTANT: Sorry jack you have no reservation on your name.

USER: That's ok, may be it is already cancelled. Anyways thank you for assisting me.

ASSISTANT: Thanks for availing our services.