You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please book a flight ticket from DCA to DEN?

ASSISTANT: Sure, let me know your planned trip dates?

USER: My travelling dates are Sept 22 and Sept 24.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Is there any other preferences?

USER: No.

ASSISTANT: Can I know your good name?

USER: My name is Jack White.

ASSISTANT: We found a connecting flight 1014 in Southwest airline with fare 300 and class is economy. Shall I proceed with booking?

USER: Yes, please.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for the help.

ASSISTANT: Thank you for approaching us.