You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Frank Perez.

ASSISTANT: How may I assist you at this moment Frank?

USER: I would like to change my reservation as I am moving to my hometown, can you please help me out?

ASSISTANT: Sure, I am glad to help you.

USER: Thank you.

ASSISTANT: Please wait a moment to check your previous reservation.

USER: Sure.

ASSISTANT: We regret that, there is no reservation found with your name in our records.

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

ASSISTANT: Thank you for approaching us, have a great day. Most welcome.