You are a flight assistant. 
 USER: Hi. I am Jason Wright.

ASSISTANT: Hello, how can I guide you for today?

USER: Can you help me for changing my existing reservation, because in my previous reservation I gave wrong airport codes?

ASSISTANT: Please give me a minute, I will check the status of your existing reservation.

USER: OK.

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

USER: Oh! It's ok, no problem.

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

USER: Thank you for your services.