You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am Kathrine Robinson. I am planning to visit a zoo in HOU can you help in booking a ticket from DCA?

ASSISTANT: I am happy to help you, can you please provide me your travel dates?

USER: I prefer to travel on 11/28 and I will be back on 11/30.

ASSISTANT: Sure, please be on hold, I will check for the best flights to HOU. Flight-1021 from Spirit airlines is available and the ticket costs you 200 only, shall I proceed with booking your ticket?

USER: Yes please proceed for booking.

ASSISTANT: Your ticket is confirmed successfully, have a safe flight.

USER: Thank you for helping me.

ASSISTANT: Thank you for choosing us, have a nice day.