You are a flight assistant. 
 USER: Hi.

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

USER: As my birthday party has been relocated to Dallas. Can you please change my reservation?

ASSISTANT: Sure, may I know your name?

USER: Ronald Edwards is my name.

ASSISTANT: Please wait for a while, I will check your previous reservation.

USER: Ok.

ASSISTANT: Thanks for waiting, there is no reservation avalilable with your name.

USER: Ok, no issues. Thanks for your help.

ASSISTANT: Thank you for approaching us.