Hello.
user
Hello.
assistant
My name is Sarah Martin.
user
How may I guide you?
assistant
I would like to change my reservation as I don't like UA airlines. Can you change my existing reservation?
user
Sure, I will help you in your existing reservation.
assistant
Ok.
user
Sarah, no reservation has been found on your name.
assistant
Ok, thank you for the information.
user
Thank you for approaching us.
assistant