You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: My name is Dorothy Robinson from San Francisco. I need to book a ticket to meet my friend on an event which is organised by parents but I should be volunteer that event at Dallas, TX - DFW.

ASSISTANT: Sure, I am here to assist you. When did you scheduled to fly?

USER: My scheduled travelling dates are on 04/16 to 04/18.

ASSISTANT: Where you will start your journey?

USER: I am boarding from San Francisco, CA - SFO.

ASSISTANT: There is a connecting flight with price of 200 and 1024 flight number. Shall I proceed to book a Spirit airline.

USER: Ok, please proceed.

ASSISTANT: Your seat has been reserved with economy airline.

USER: Thank you.

ASSISTANT: Thank you for choosing us.