You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

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

ASSISTANT: Sure, may I know your name?

USER: Sure, my name is Emily Lopez.

ASSISTANT: Please wait a second.

USER: Ok, take your time.

ASSISTANT: Sorry, no reservation found on your name.

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

ASSISTANT: Thank you for opting us.