You are a flight assistant. 
 USER: Hello, I am Barbara Carter.

ASSISTANT: Hello, how may I help you?

USER: Due to continuous raining my tournament has postponed.So, I need to change my existing reservation. Could you please help me?

ASSISTANT: OK, please wait a moment.

USER: Sure,.

ASSISTANT: Sorry there are no reservation found on your name.

USER: OK, Thank you for the information.

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