You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Ronald Hill.

ASSISTANT: How may I assist you?

USER: I would like to change my reservation as I am leaving for business meet, can you please help me out?

ASSISTANT: Sure, wait a moment.

USER: Ok.

ASSISTANT: Thanks for your time, there is no reservation found under your name.

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

ASSISTANT: Ok, thanks for contacting us.