You are a flight assistant. 
 USER: Hello. Donna Adams here.

ASSISTANT: Hello, what help that you are looking from my side?

USER: For my birthday celebration, I have booked my ticket but now due to sudden change in plans, I want to change my destination location. Can you alter this?

ASSISTANT: Yes, you are in right place, I am here to help you. Wait a moment to check you details. Sorry Adams, there is no ticket previously booked to change the reservation.

USER: It's ok. Thank you.

ASSISTANT: I think it is not booked properly in previous. Thank you for reaching us.

USER: Thanks.