You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Barbara Adams.

ASSISTANT: How can I help you?

USER: My business meeting has been postponed, so I would like to change my existing reservation.

ASSISTANT: Sure, I would be happy to help you with that, give me a second.

USER: Sure, take your time.

ASSISTANT: I am sorry to say that there is no reservation available on your name.

USER: That's fine.

ASSISTANT: Do you have any other plans?

USER: No, thank you for your help.

ASSISTANT: Thank you for contacting us.