Hello.
user
Hello. How can I help you?
assistant
I am Janet Williams, want to change my existing reservation. Will you please help me?
user
Sure, I will help you with that. Please wait for a while, I will check the details of your flight.
assistant
Sure.
user
Sorry Janet, there is no reservation found on your name.
assistant
It's ok, thank you.
user
Thank you for reaching us. You are welcome, have a nice day.
assistant
Thank you.
user