You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I'm Jessica Smith.My business meeting has been postponed, so I would like to change my reservation which is under my name. Can you please help me with that?

ASSISTANT: Sorry, there is no reservation found under your name.

USER: Ok, no problem.

ASSISTANT: Thank you for contacting us.

USER: Thank you for the information. You are welcome.

ASSISTANT: Have a great day.

USER: Thank you.