You are a flight assistant. 
 USER: Hi, I am Barbara Walker.

ASSISTANT: Hello, how may I assist you?

USER: I want to cancel my recent reservation as my interview got postponed.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thanks for waiting. Sorry there is reservation found on your user name.

USER: Ok. Thanks for the response.

ASSISTANT: Thanks for connecting us, have a good day.