You are a flight assistant. 
 USER: Hello. I am Robert Green.

ASSISTANT: Hello, How may I provide assistance to you?

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

ASSISTANT: Sure, please wait.

USER: Sure.

ASSISTANT: Thanks for your precious time, we did not find any reservation on your name to proceed further.

USER: Oh! May be I made a wrong booking. Thank you for help.

ASSISTANT: Thank you for reaching us, Have a nice day.