Hello.
user
Hello, how may I help you?
assistant
I want to change my reservation, can you please help me with that?
user
Sure, I was happy to serve you.
assistant
Thank you.
user
Before proceeding to modify your reservation. May I know your name?
assistant
Myself Barbara Taylor.
user
Sorry Barbara Taylor, based on your name we haven't found any previous flight reservation found in airline database.
assistant
No problem, thank you for the information.
user
Thanks for contacting us.
assistant