You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I would like to meet my school friend at Boston, please help me in booking a ticket from DCA to BOS.

ASSISTANT: Sure. Tell me your travel dates please?

USER: My travel dates are on July 19 and July 21.

ASSISTANT: May I know your name please?

USER: My name is Stephen Clark.

ASSISTANT: Are you looking for a stopover in your journey?

USER: I am fine with any flights.

ASSISTANT: Any other preferences?

USER: No, thank you for asking.

ASSISTANT: Please wait.

USER: Sure, take your time.

ASSISTANT: Thanks for your patience. I have found spirit airlines which is a stopover flight.

USER: Please proceed for booking.

ASSISTANT: Yes, I have confirmed your flight ticket in flight number 1007.

USER: Thank you for your assistance.

ASSISTANT: Thank you.