You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you for the day?

USER: I am Carolyn White want to travel to Chicago,IL-ORD to surprise my mother on her birthday. Can you book  a ticket on 10/31?

ASSISTANT: Sure, please mention your return date?

USER: I will return on 11/02.

ASSISTANT: Do you have any specifications?

USER:  I nee a connecting flight. Make sure price should not exceed 500.

ASSISTANT: To check the availability of flights, may I know your origin airport code?

USER: I will depart from Washington,DC-DCA.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: We found Spirit airline with flight number 1023 is matching with your given details. Price 100 with a single connection. Shall I reserve your ticket?

USER: Ok, you can proceed.

ASSISTANT: Your booking has been confirmed.

USER:  Thank you for helping me.

ASSISTANT: Thank you for connecting with us, have a good day.