Hello.
user
Hello, how may I be at your service today?
assistant
 I am planning to change my destination airport code in my existing reservation, can you please help me out? My name is Thomas Parker.
user
Sure, we are here to help you. Ok, please be on hold.
assistant
Ok, take your time.
user
Sorry, there is no reservation found on your name in our database.
assistant
That's ok, thank you for the response.
user
Thank you for choosing us.
assistant