Hi.
user
Hello.
assistant
I am Samuel Smith.
user
How can I render you?
assistant
I already have a reservation to attend  my meeting, due to some problems meeting place has been changed. So, I need a few changes in my reservation.
user
Ok.
assistant
Can you help me in changing reservation?
user
Sure, I will glad to help you.
assistant
Thank you.
user
Wait for a while.
assistant
Sure.
user
Thanks for waiting, There is no reservation found on your name.
assistant
Ok, not an issue.
user
Thanks for choosing us.
assistant
Thank you for kind information.
user