You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Owing to an emergency, my exam go preponed. So I had a request to you to change my existing reservation?

ASSISTANT: Ok, may I know your good name please?

USER: Sure, Donna Anderson here.

ASSISTANT: Thank you Donna Anderson, please wait a moment, I will check and get back to you.

USER: Sure.

ASSISTANT: I am happy to say that we found a reservation on your name. May I know your new travel dates please?

USER: Sure, my scheduled dates are 10/26 and 10/28.

ASSISTANT: Please share me your airport points.

USER: Sure, I want to depart from DTW to DCA.

ASSISTANT: Based on your details there is a flight in airline AA with flight number: 1008. Shall I proceed for booking?

USER: Yes, you can.

ASSISTANT: Your new ticket has been booked.

USER: Thanks for your help.

ASSISTANT: Thanks for choosing us. Have a good day.