You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: I am Ryan Roberts. I would like to visit Washington to meet my parents, can you please help me to book a flight ticket from SFO to DCA?

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: Sure, my journey dates are Apr 01 and Apr 03.

ASSISTANT: The economy class with flight number 1000 of Spirit airline is available having fare as 100 and connection as 1, is it ok for you?

USER: Ok, please confirm.

ASSISTANT: Ok, your reservation is confirmed.

USER: Thank you for your service.

ASSISTANT: You are welcome, have a great day.