Hello.
user
Hello. How may I hep you?
assistant
I am Joseph Carter. My planned trip got postponed unexpectedly, so I need to change my travel dates. Can you please help me in changing?
user
Sure, I will help you in changing your reservation.
assistant
Thank you.
user
Please wait for a while.
assistant
Ok, I will wait for your reply.
user
Sorry, there are no reservations found.
assistant
It's ok, thank you for the information.
user
Thank you for choosing our services.
assistant