You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please cancel my recent reservation? As my planned trip has been cancelled.

ASSISTANT: Sure, I am here to help you with cancellation. In whose name, your reservation has been done before?

USER: Sure, my name is Charles Miller.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for your time, there was no reservation found on your name to cancel it.

USER: That's ok, thank you for giving the information anyways.

ASSISTANT: Thank you for opting us.