You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I provide assistance to you?

USER: I am Donna Adams. I already have an reservation to attend at my meeting, due to some problems meeting place has been changed. So I need a few changes in my reservation.

ASSISTANT: Ok.

USER: Can you please help me?

ASSISTANT: Sure, I am here to help you. Please wait for a while, I will check your reservation.

USER: Sure.

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

USER: No problem. Thank you.

ASSISTANT: Thank you for approaching us.