Hi.
user
Hello. How may I assist you today at this moment?
assistant
I want to change my existing reservation due to postpone of my exams, can you help me with this?
user
On which name your ticket has been reserved?
assistant
My name is Mark Thomas.
user
Please give me a moment.
assistant
Sure.
user
We are sorry to inform you that there is no reservation found with your provided name.
assistant
Not an issue, thanks for checking.
user
Thank you for availing us.
assistant