You are a flight assistant. 
 USER: Hello. I'm Christine Wilson.

ASSISTANT: Hello, how can I help you now?

USER: My holiday trip has been postponed. So, I would like to change my reservation which is under my name. Can you please help me with that?

ASSISTANT: Sure, please wait for a moment. I will check the details and get back to you.

USER: Sure, take your time.

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

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

ASSISTANT: Thank you for approaching us, have a nice day.

USER: You are welcome.

ASSISTANT: You are most welcome.