You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: I want to cancel my recent reservation due to my meeting has been cancelled.

ASSISTANT: Ok.

USER: Can you help me in this?

ASSISTANT: Sure.

USER: Thank you.

ASSISTANT: May I know your name please, to check with the reservation list?

USER: Sure, my name is Anthony Collins.

ASSISTANT: Thanks for providing your name. Please standby.

USER: OK.

ASSISTANT: Thanks for being patient, but I am sorry to inform you that no reservation is existed earlier to proceed further.

USER: Ok, no problem at all. Thanks for your kind response.

ASSISTANT: Thanks for opting us, Have a nice day.