You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you right now?

USER: I am Catherine Brown. Please may I know if it is possible to cancel the reservation which is existing?

ASSISTANT: Sure, I will assist you in cancelling your reservation.

USER: As I can't make my trip because of the snow fall at my location. So I am asking.

ASSISTANT: Brown, we checked in reservation list with the name of Catherine Brown but no name is matching. Sorry for the inconvenience.

USER: Is it, ok then may be the reservation is not been confirmed previously. Thank you for assisting me.

ASSISTANT: My pleasure, have a nice day.