You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I would like to spend some more time with my mother, so I would like to change my existing reservation to Orlando, could you help with this?

ASSISTANT: Oh! that's great to hear. Sure, can I have your name please, so that I will check the reservation in our database.

USER: My previous reservation has done with the name of Donna Gonzalez.

ASSISTANT: Sorry Donna, no reservation found on your name.

USER: Ok, no issues. May be there is a mistake while booking my previous reservation.

ASSISTANT: Ok, thank you for reaching us.

USER: Thank you for your help.