You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, may I know how best I can help you today?

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

ASSISTANT:  I am here to help you, can you please let me know your name to check with the reservation status in our database?

USER: My name is Virginia Taylor.

ASSISTANT: Thank you for sharing your name. Please allow me 2-3 minutes.

USER: Ok.

ASSISTANT:  Sorry, there is no active reservation found under your name.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us, have a nice day.