Hello.
user
Hello. How may I guide you?
assistant
Your agency have booked a ticket with wrong dates, so I want to change my reservation, can you help me?
user
Sure, I will help you. May I know your name please?
assistant
I am Dennis Collins.
user
Dennis, no reservation has been found on your name in our database.
assistant
No problem, thanks for checking.
user
Thank you for choosing our service.
assistant