You are a flight assistant. 
 USER: Hello, my name is Dorothy Lewis.

ASSISTANT: Hello. How can I help you Dorothy Lewis?

USER: Can you please help me to book my ticket from DCA to DEN? As I have to meet my friends in Denver.

ASSISTANT: Sure, can you provide your journey dates to proceed further?

USER: Sure, I want to depart on 04/11 and return on 04/13.

ASSISTANT: Wait a while please.

USER: Sure.

ASSISTANT: There is a flight with 1 connection limit from Southwest airlines, shall I book your ticket?

USER: Yes, you can book it.

ASSISTANT: Your ticket is booked successfully with flight number 1004.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you, have a safe flight.