You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Anna Scott.

ASSISTANT: How may I help you?

USER: My holiday trip has been postponed. So, I would like to change my reservation which is under my name.

ASSISTANT: Ok, please wait a moment.

USER: Sure, take your time.

ASSISTANT: I have checked your reservation in our database with your name, there is no reservation found to change it.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: welcome, have a nice day.

USER: You are welcome.