You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: Can you please help me in cancelling my recent reservation?

ASSISTANT: Sure I am here to help you out. May I know your name please?

USER: Sorry,can you change my reservation?

ASSISTANT: Sure, may I know your name please?

USER: Sure, my name is Mark Wilson.

ASSISTANT: Wait a moment please.

USER: Sure.

ASSISTANT: Mark Wilson, we haven't found any reservation under your name  in our database to change it.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for choosing us.