You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Due to some problems my trip was cancelled so can you please cancel my flight ticket?

ASSISTANT: Sure, may I know your name please?

USER: Thank you for your response, my name is Carolyn Davis.

ASSISTANT: I am sorry no reservation found on your name.

USER: It's ok no problem.

ASSISTANT: Thank for choosing us.

USER: Thank you for your information.