Hello.
user
Hello. How can I assist you now?
assistant
I want to change my reservation as my plan to visit Phoenix is postponed. Can you help me?
user
Sure, I will help you with that. Can I have your good name please to check your  reservation status?
assistant
My name is Melissa Brown.
user
Ok,  please wait a moment.
assistant
Sure.
user
Sorry Melissa Brown, no reservation has found under your name to change.
assistant
Ok, thank you for helping me.
user
Thank you for choosing us, have a good day.
assistant