You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hi.

USER: Raymond Lopez here.

ASSISTANT: How can I  help you?

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

ASSISTANT: Sure, just a moment please.

USER: Ok.

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

USER: No problem, thank you for your information.

ASSISTANT: Thank you for choosing us.