You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I want to change my destination airport code in my existing reservation, can you please help me out?

ASSISTANT: Sure, please provide your name to fetch your ticket from our database.

USER: Sure, my name is Stephanie Brown.

ASSISTANT: Please wait for a moment to search for your ticket.

USER: Ok.

ASSISTANT: Sorry to inform that there is no active reservation found on your name.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for contacting us.