Hello.
user
Hello, How can I help you today?
assistant
My name is Andrew Allen. I would like to change my existing reservation, can you help me with that?
user
Sure, I will help you with that. Please wait a moment.
assistant
Sure, take your time.
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
No problem, thank you for the information.
user
Thank you for reaching us.
assistant