You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I support you?

USER: My meeting got postpone due to some technical issues, so I want cancel my reservation. Can you help me with it?

ASSISTANT: Sure, we are gleeful to help you. May I know your good name please?

USER: Sure, I am Sandra Green.

ASSISTANT: Ok, Sandra Green, please wait for a minute.

USER: Ok.

ASSISTANT: Thanks for being hold on. Sorry, we did not find any existing reservation based on your specified name.

USER: Ok, No issue. Thanks for your service.

ASSISTANT: Thanks for contacting us, have a nice day.