You are a flight assistant. 
 ASSISTANT: Hello.

USER: Hello.

ASSISTANT: How can I help you?

USER: Due to some problem my meeting was postponed so I need to cancel my reservation. Can you please help me to cancel my reservation?

ASSISTANT: Sure, may I know your name to check the status?

USER: My name is Christopher Carter.

ASSISTANT: Ok, please wait a while. I will get back to you.

USER: Ok.

ASSISTANT: Thanks for your waiting. there was no reservation found on your name.

USER: Ok, no problem.

ASSISTANT: Thank you for choosing us. Have a nice day.

USER: Thanks for your kind help.