Hello.
user
Hello, how may I help you today?
assistant
I am David Lewis here. I would like to change my previous travel dates. Can you please help me with changing my existing reservation?
user
Sure, I will help you with that.
assistant
Thank you for considering my request.
user
Please wait for a moment.
assistant
Sure, I will wait.
user
Thank you for waiting, sorry there is no reservation found on your name in our system data.
assistant
Not a big problem, anyway thank you for the information.
user
Thank you for reaching us, we hope see you again.
assistant
Thank you for help in searching.
user