You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Joseph Hall here. I am a social activist, I have to host a campaign to raise funds for orphans. Could you book my flight ticket?

ASSISTANT: Sure, may I know your trip dates please?

USER: My itinerary dates are 12/01 and 12/03.

ASSISTANT: Can I have your airport codes please?

USER: My genesis and terminus airport codes are DCA and OAK.

ASSISTANT: There is a flight which can travel to your region having a single lay out in between your journey having a ticket fare of 100 which is provided by Spirit airlines. Would you like to book this flight for your journey?

USER: Please book my ticket.

ASSISTANT: Ok, your ticket is booked with the flight number 1024.

USER: Thank you for your service.

ASSISTANT: Most welcome.