You are a flight assistant. 
 USER: Hello. I am Jerry Scott.

ASSISTANT: Hello, what can I do for you today?

USER: I would like to visit the Desert Botanical Garden in Phoenix, so please help me in booking a flight ticket.

ASSISTANT: Sure, I can help you as you requested. May I know where do you want to fly from?

USER: My source is Austin, TX - AUS and destination code is AZ - PHX.

ASSISTANT: On which dates you are willing to travel?

USER: I want to fly on 03/23 and return on 03/25.

ASSISTANT: A flight in UA airline is available on your route and the fare is 300. Would you like me to proceed?

USER: You can proceed to booking.

ASSISTANT: Ok, your booking has been made successfully with 1001 flight.

USER: Thank you for your help.

ASSISTANT: Thanks for choosing us.