Hi.
user
Hello, how can I guide you for today?
assistant
Please help me with changing my reservation due to some changes in the plan of my trip with my colleagues.
user
I am here to help you in changing your reservation.
assistant
Thank you.
user
Can you please provide your name to check the reservation status with your name in  our booking list?
assistant
Sure, my name is Eric Walker.
user
Sorry for the trouble which is caused to you, I have not found any reservation on your name in our database.
assistant
No issues, thank you for your time.
user
You are welcome, thank you for reaching us.
assistant