You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Janet Campbell.

ASSISTANT: How may I assist you now?

USER: I want to cancel from reservation. can you help me in that?

ASSISTANT: Janet Campbell, please allow me to check with your existing reservation for a moment.

USER: Sure.

ASSISTANT: There is no active reservation by your name, sorry for the inconvenience by our agency.

USER: That's ok., thank you for your information.

ASSISTANT: Thank you for consulting our services. Have a great day.