You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I want to book a flight ticket from DCA to SFO, can you help me with booking please?

ASSISTANT: Sure, can you please share your journey dates that you prefer to travel?

USER: Yes, my travelling dates are Apr 20 and Apr 22.

ASSISTANT: Do you require any stopovers in your journey?

USER: Yes, I need a lay by in between the journey.

ASSISTANT: May I know your name?

USER: My name is Brenda King.

ASSISTANT: Is there any other specification?

USER: No, please check the availability of flights.

ASSISTANT: Ok, please wait a moment.

USER:    Sure, take your time.

ASSISTANT: There is a flight with your requirement, airline is American Airlines with price 100 and single connection. Shall I proceed with booking?

USER: Yes, please proceed with booking.

ASSISTANT: Your booking is done and flight number is 1008 in economy class.

USER: Thank you for the help.

ASSISTANT: Thanks for reaching us.