Hello.
user
Hello. How may I aid you today?
assistant
I want to change my reservation with new dates. Can you help me with that?
user
Sure, I am glad to help you with that. Can I know your name to check your previous reservation?
assistant
My name is Shirley Perez.
user
Please wait a moment to check.
assistant
Sure.
user
Thank you for waiting, I have checked in reservation list to change your ticket, but could not find any reservation with your name.
assistant
Thank you for the details.
user
Thank you for reaching us,  hope you have a great day.
assistant