You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I guide you today?

USER: Can you please help me in booking a flight ticket to IAD from DEN?

ASSISTANT: Sure, I am here to help you. May I know your travelling dates, please?

USER: My travel dates are from Apr 13 to Apr 15.

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

USER: I need a single connection.

ASSISTANT: May I know your other specifications for your journey?

USER: I would like to travel economy class.

ASSISTANT: Let me know your good name to proceed further.

USER: I am Frank Young.

ASSISTANT: There is a flight available with price 400 and the connection is 1 with Southwest Airlines. Would you like me to proceed with the booking?

USER: You can proceed with booking.

ASSISTANT: Your ticket has been reserved with flight 1017.

USER: Thank you.

ASSISTANT: My pleasure.