You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you today?

USER: I need you to book a flight ticket from DEN to DCA. Please help me.

ASSISTANT: Sure, can you share your travel dates please?

USER:  March 09 and 11 are my planned travelling dates.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I need a break in between my journey.

ASSISTANT: For booking, we need your good name. Please mention it.

USER: Helen Smith here.

ASSISTANT:  Would you let us know if you have any other preferences?

USER: I would like to fly in a economy class.

ASSISTANT: We found an economy class ticket in Delta airlines with fare 200 and it is a connecting flight. Can I book your ticket?

USER: Yes, please book the ticket.

ASSISTANT: Your booking is done with flight number 1003.

USER: Thank you.

ASSISTANT: Thank you for availing us.