You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I had done my flight ticket booking last week but suddenly I don't want to travel there. So, I want you to cancel my flight ticket.

ASSISTANT: Ok. Can I know your name please?

USER: I am Sharon Phillips.

ASSISTANT: There is no reservation found on your name.

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

ASSISTANT: Thank you for contacting us.