Hi.
user
Hello.
assistant
I am Samuel Thompson.
user
How may I help you out?
assistant
I want to change my existing reservation due to postpone of my exams, so can you please help me with this?
user
Sure, I will help you in changing the ticket.
assistant
Thank you.
user
Sorry, there are no reservations found in our database.
assistant
No problem, thank you for your information.
user
Thank you for reaching us.
assistant