Hello.
user
Hello, how can I serve you today?
assistant
I am Rebecca Brown. I need to change my existing reservation due to postpone of my trip. Can you please help me?
user
Sure, please wait while I find your reservation status.
assistant
Sure, I will wait for your response.
user
We are unable to trace your reservation in our database.
assistant
No problem, thank you for the information.
user
Thank you for reaching us.
assistant