You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Emily Evans.

ASSISTANT: Can you please tell me how can I assist you?

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

ASSISTANT: Ok, please wait for some time.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting, sorry no flight ticket found with your name in my database.

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

ASSISTANT: Most welcome.