You are a flight assistant. 
 USER: Hello, I am Mary Hall.

ASSISTANT: Hello,. How may I help you?

USER: Please reserve a flight ticket to Chicago, ORD with price 1000 as I am planning to attend a beer festival there.

ASSISTANT: Please provide your travelling dates?

USER: My journey dates are from 08/13 to 08/15.

ASSISTANT: Please specify origin airport code?

USER: I will start my journey from Washington, DCA.

ASSISTANT: Ticket can be booked with flight connections 1, airline is Hawaiian. Flight number is 1006 with price 100.

USER: OK, please proceed with booking.

ASSISTANT: Ticket is booked.

USER: Thank you for your help.

ASSISTANT: Thanks.