You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I planned to meet my friend in IAH, can you please help me to book a flight ticket from DCA?

ASSISTANT: May I Know your planned travel dates?

USER: I prefer to travel on Nov 21 and Nov 23.

ASSISTANT: Do you have any limits on number of connections?

USER: I prefer to travel in a connecting flight.

ASSISTANT: D you have any another specifications on your journey?

USER: No.

ASSISTANT: May I know your name for the booking process?

USER: I am Lisa Thompson.

ASSISTANT: Frontier Airlines providing a flight with the price 200 with single connection. Can I proceed for the booking?

USER: Ok, please confirm my booking.

ASSISTANT: Your flight ticket reservation done with the flight number 1000.

USER: Thank you for your help.

ASSISTANT: Welcome, thank you for reaching us.