Hello. Andrew Perez here.
user
Hello, how can I help you today?
assistant
Due to sudden change in my planned date of journey, I would like change my reservation. Can you please help me out with that?
user
Sure, please wait for a moment.
assistant
Ok, take your time.
user
Sorry, there was no reservation found with your given name.
assistant
Oh! I think the ticket was not booked due to server issue. Anyway, thank you for the information.
user
Thank you for opting us.
assistant
Welcome.
user