Hello,.
user
Hello,. How may I help you?
assistant
I need to change my existing reservation due to postpone of my trip to Oakland.
user
Ok.
assistant
Would You please help me with changing my existing reservation?
user
Please provide your name.
assistant
Sure, my name is Amanda Edwards.
user
I regret, no reservation exists.
assistant
No problem, thank you for the information.
user
Thanks.
assistant