You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I need to attend my daughter convocation ceremony on 04/11. So that please help me to book flight ticket?

ASSISTANT: Sure, we are here to serve you. Can you please provide your journey details?

USER: Sure, I want to start one day before the event that is on 04/10 from Washington DC - DCA. I want to fly out of Dallas & Fort Worth, TX - DFW and I have to return on 04/12.

ASSISTANT: Ok, we found a AA airline with flight number 1010 and price of 100 matching your particulars. Shall I proceed with this booking?

USER: OK, go through the booking.

ASSISTANT: May I know your name to proceed?

USER: Sure, my name is Williams Davis.

ASSISTANT: Ok. Your booking has been processed.

USER: Thank you. I am happy with your service.

ASSISTANT: Thank you for reaching us.