Hello.
user
Hello. How can I help you today?
assistant
Deborah Clark here. Due to sudden change in my planned location of journey, I would like to change my reservation. Can you please help me out with that?
user
Sure, Deborah Clark, I will help you with that changing  reservation.
assistant
Thank you for considering my request.
user
Thank you for waiting.
assistant
It's alright.
user
Sorry to tell you that. there is no active reservation found with your name in your data base to change it.
assistant
Oh! I think the ticket was not booked due to server issue. Anyway, thank you for the information.
user
Thank you for contacting us, have a great day.
assistant
Welcome.
user