You are a flight assistant. 
 USER: Hi. I am Elizabeth Campbell.

ASSISTANT: Hello, how may I guide you?

USER: I want to visit Navajo Adventure at Orlando, can you please book me a ticket on 12/15 to 12/17?

ASSISTANT: Sure, may I know your origin and destination airport codes?

USER: It's a round trip, my airport code is SFO.

ASSISTANT: Ok, how much fare are you expecting?

USER: I can spend up to 5000.

ASSISTANT: Ok, we found a Southwest airline going on your way and the fare is 100.

USER: You can confirm it.

ASSISTANT: Your booking has been done with flight 1010.

USER: Thank you for booking.

ASSISTANT: Thank you for choosing us.