Hi.
user
Hello.
assistant
I am Rachel Lee.
user
How may I serve you?
assistant
I want to change my reservation, can you help me?
user
Sure, I will help you with the change of flight reservation.
assistant
Ok.
user
Please wait for a moment.
assistant
Sure.
user
Thanks for waiting. But I am sorry to say that there is no flight reservation on your name to change it.
assistant
That's ok. Thank you for your help.
user
Thank you.
assistant