You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you for the day?

USER: Joseph Thomas here. I want to travel from DCA to SFO for attending a Seminar. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, I will help you with that. May I know your preferable travel dates?

USER: My travelling dates are from 07/15 to 07/17.

ASSISTANT: There is a connecting flight in Spirit airline with a a fare of 200. Shall I proceed?

USER: Please proceed for booking the flight ticket.

ASSISTANT: Joseph Thomas, your booking has been done with the flight number 1026.

USER: Thanks for helping me.

ASSISTANT: You are welcome, thank you for reaching our agency.