You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I am Mark Davis. I am planning a trip with my family for a watching circus event in IAD, can you book a ticket from AUS?

ASSISTANT: Ok. Can you tell me your trip dates?

USER: My Planned date is on 01/17 to 01/19.

ASSISTANT: I find a ticket for you with airline Delta and number 1002 with connection limit 1 of cost 200.

USER: Proceed for booking the ticket.

ASSISTANT: Ok. Your ticket is booked.

USER: Thank you for helping me.

ASSISTANT: Thank you to visit.