You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Sarah Hall.

ASSISTANT: How can I aid you today?

USER: Can you please book me a ticket from DEN to visit zoo park which is at DCA?

ASSISTANT: Sure, can you share me your travelling dates?

USER: Sure, my travel dates are Oct 13th and Oct 15th.

ASSISTANT: Do you have any specifications?

USER: Yes, my connection limit must be only 1 and I can afford only 5000.

ASSISTANT: There is a flight with one connection having airfare is 100 and AA airline. Shall I proceed with the booking?

USER: Ok, I am comfortable with that. Please proceed by booking.

ASSISTANT: Your ticket is confirmed in economy class.

USER: Thanks for your service.

ASSISTANT: Thank you for reaching us.