You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I want to cancel my reservation, because I have another meeting on those dates, can you please cancel my reservation?

ASSISTANT: Ok, what is your name of reservation?

USER: Sure, my name is Raymond Green.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Sorry, no reservation found by your name Raymond Green.

USER: Oh! It's ok no problem may be I am not booked my ticket properly at that time.

ASSISTANT: Thank you for reaching our services.

USER: Thank you for your information.

ASSISTANT: Have a nice day.