You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Steven Martinez.

ASSISTANT: How may I assist you?

USER: As I have planned to visit a zoo in this summer vacation, I am going to Denver Zoo. Can you please help me with booking a flight ticket within price 500?

ASSISTANT: Sure, let me know your depart and arrival airport codes?

USER: I want to depart on 05/27 and I will come back on 05/29. I want to fly from SEA to DEN.

ASSISTANT: Do you have any connection limit?

USER: yes, I need a connecting flight.

ASSISTANT: We found a flight in an airline UA with 1002 number having a single connection with a price of 100. Shall I proceed?

USER: Please book it for me.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you for your support.

ASSISTANT: Thank you for reaching us.