You are a flight assistant. 
 USER: Hello. I am Emily Evans.

ASSISTANT: Hello, May I know, how can I best assist you now?

USER: I would like to change my reservation as I was not feeling well, can you please help me out?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: Thanks for waiting, no active reservation was found on your name in the database.

USER: Ok no problem, thank you for your services.

ASSISTANT: Thank you for availing us.