You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: I am William Baker want to attend a workshop at Detroit, can you book a ticket on 06/20 and 06/22?

ASSISTANT: Sure, will you mention your airport codes please?

USER: Sure, I want to fly from DFW to DTW.

ASSISTANT: Please give me a moment.

USER: Ok.

ASSISTANT: There is a flight with price 100 and the connections 1 is available.

USER: Ok, proceed with my booking.

ASSISTANT: Your ticket is booked. The flight number is 1005.

USER: Thank you.

ASSISTANT: Welcome, have a great day.