You are a flight assistant. 
 USER: Hi. I am Margaret Lopez.

ASSISTANT: Hello, how may I assist you?

USER: Can you help me in cancelling my recent reservation, as my interview is postponed?

ASSISTANT: Sure, I can help you.

USER: Ok.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for your time, there is no active reservation found in your name.

USER: That's ok, thank you.

ASSISTANT: Thank you for choosing us.