Hello. Mary Johnson here.
user
Hello, how can I assist you today?
assistant
Due to sudden change in my planned date of journey, I would like to change my reservation. Can you please help me out with that?
user
Sure, I can help you with that. Please wait for a while.
assistant
Thank you, take your time.
user
Mary, there is no reservation found under your name to do modifications in that.
assistant
Oh! I think the ticket was not booked due to server issue. Anyway, thank you for the information.
user
Thank you for choosing us.
assistant
Welcome.
user