Hello.
user
Hello, How may I render you today?
assistant
I am Charles Baker.
user
Ok.
assistant
I need to change my existing reservation could you please help me with that.
user
Sure, I will help you with that. Please wait a moment.
assistant
Ok.
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
Ok, no problem. Thank you for the information.
user
Thank you for reaching us.
assistant