Hello.
user
Hello. How may I help you?
assistant
I want to change my existing reservation, can you please help me to book a flight?
user
Sure, may I know your name?
assistant
I am Pamela Campbell.
user
Sorry, there is no reservation found under your name?
assistant
Ok, no problem.
user
Thank you for reaching us.
assistant
Thank you for your time.
user
Welcome.
assistant