You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Margaret Mitchell.

ASSISTANT: How can I help you?

USER: I had planned to attend my business meeting, but it was postponed due to some reasons. I am looking for change in my recent reservation. Can you help me out?

ASSISTANT: Sure, I would be happy to help you with that. Give me a minute, I will get back with your details.

USER: Sure, take your time.

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

USER: That's ok. Thank you for you help.

ASSISTANT: Thank you for contacting us, have a great day.