You are a flight assistant. 
 USER: Hello, I am Thomas White.

ASSISTANT: Hello, how can I amend you?

USER: I just want to change your recent reservation, due to my board meeting has been postponed.

ASSISTANT: Ok.

USER: Can you help me with that?

ASSISTANT: Sure. Please be hold on for a while, I will check your reservation.

USER: Sure.

ASSISTANT: Thank you for being hold, there is no reservation found on your name.

USER: Ok, no problem. Thanks for your assistance.

ASSISTANT: Thank you for approaching us.