Hello.
user
Hello. How may I serve you now?
assistant
I want to change my existing reservation due to sudden change in my family trip dates. Can you help me with that?
user
Sure, I will help you.
assistant
Thank you.
user
Please, provide your name. So that I can search an existing reservation with your name.
assistant
Sure, Jerry Nelson here.
user
Wait a minute, please.
assistant
Sure, I will wait.
user
Thanks for your time, there is  no reservation found on your name.
assistant
Ok, no problem.
user
Thank you for availing us.
assistant
Thank you for your quick response.
user