You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I render you today?

USER: I am Angela Jackson, I plan to spend my holiday at New York, but due some urgent work I have to go Las Vegas. Can you change my reservation with new location?

ASSISTANT: Sure. I will check the reservation list and revert to you.

USER: Ok.

ASSISTANT: Thanks for your time. But no seat is reserved under your name to proceed further.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for choosing us.