You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I have made a reservation earlier to attend for a meeting, but due to bad weather conditions there, the meeting got postponed. Can you please help me in changing my reservation?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Can I know your good name please?

USER: Sure, my name is Donna Garcia.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, there is no active reservation on your name to change.

USER: No issues, thank you.

ASSISTANT: Thank you for opting us.