You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I need to book a flight ticket from DCA to SFO, Can you please help me for booking?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: I would like to travel on 08/13 to return on 08/15.

ASSISTANT: Do you have any other specifications?

USER: Yes, I need a normal cost airline.

ASSISTANT: Please help me with your name for booking.

USER: Jason Harris here.

ASSISTANT: According to your information, I have found a flight with single stop over in your journey with a minimum fare of 300 with flight number 1007. Shall I proceed with this flight?

USER: Ok, proceed for booking.

ASSISTANT: Your booking is done.

USER: Thanks for your information.

ASSISTANT: Thank you for reaching us.