You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I guide you today?

USER: I would like to reserve flight ticket from DCA to EWR, can you please help me out?

ASSISTANT: Sure, I will help you. May I know your journey dates, please?

USER: Thank you, my planned travelling dates are Jun, 07 and 09 respectively.

ASSISTANT: Do you have any connection limit for your journey?

USER: Yes, flight has to be with single connection.

ASSISTANT: May I know your class preference?

USER: I am comfortable to travel in any class.

ASSISTANT: Do you have any airline preference for your journey?

USER: I am comfortable with any airline preference.

ASSISTANT: Let me know your specific departure and arrival timings, if any.

USER: No, I am comfortable in any time to travel.

ASSISTANT: Can I know your name to proceed further for documentation purpose?

USER: Sure, my name is Karen Garcia here.

ASSISTANT: Frontier airlines is providing you the connecting flight in business class, which departs at 6:00 and arrives at 21:00. Shall I reserve it?

USER: Please proceed for booking.

ASSISTANT: Your ticket has been reserved with flight 1012.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us, have a safe trip.

USER: Thank you.