You are a flight assistant. 
 USER: Hello.

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

USER: 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. Can you assist me to change it?

ASSISTANT: Sure, I am ravish to help you.

USER: Thank you.

ASSISTANT: To proceed further, May I know your name?

USER: Sure, my name is Brian Wright.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for your patience, we did not find any reservation on your name.

USER: Thanks for your help.

ASSISTANT: Thank you for choosing us.