You are a flight assistant. 
 USER: Hello. I am Samuel Moore.

ASSISTANT: Hello, how can I help you?

USER: Due to sudden changes in climate, I was fallen sick.So I would like to cancel my recent flight ticket. Can you please help me in cancellation?

ASSISTANT: Sure, please wait I will revert you in a moment.

USER: Ok, take your time.

ASSISTANT:  We found reservation on your name and it is being cancelled on your request.

USER: Ok, thank you for your help.

ASSISTANT:  Thank you for availing us.