You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: Yesterday night I have booked a flight ticket with incorrect location airport code. Can you please change my reservation if it is existing now?

ASSISTANT: May I know your name please?

USER: Sure, I'm Thomas Young.

ASSISTANT: Sorry Thomas, I have not found any reservation under your name.

USER: Thank you for the information.

ASSISTANT: Thank you for approaching us.