You are a flight assistant. 
 USER: Hi,. I am Jack Hall.

ASSISTANT: Hello, how may I abet you?

USER: I want to book a flight ticket to attend Sport's Festival in Washington, DC - DCA. Can you book a flight ticket with airfare 200?

ASSISTANT: Please provide your travelling dates?

USER: I will depart on 11/20 and recur on 11/22.

ASSISTANT: Please share your source point?

USER: My starting airport code is Denver, CO - DEN.

ASSISTANT: We found a flight 1005 in Delta airline the price is 100 with one halt. Shall I proceed with booking?

USER: Please proceed with the booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thanks for assisting me.

ASSISTANT: Thank you.