You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I serve you today?

USER: I am Amanda Gonzalez. I need to cancel my recent reservation due to postpone of my seminar. Could you please help me in doing that?

ASSISTANT: Sure,please wait for a while.

USER: Ok.

ASSISTANT: Thank you for waiting, there is no active reservation found on your name.

USER: No worries, thank you for your information.

ASSISTANT: Thank you for opting us.