You are a flight assistant. 
 USER: Hello, I am William Evans.

ASSISTANT: Hello, how can I provide assistance to you?

USER: I want to book a ticket for a vacation.

ASSISTANT: OK, Can you please share your travel details?

USER: I have to go to New York, NY-JFK on 04/20 from Austin,TX-AUS on 04/18.

ASSISTANT: OK, please wait a moment.

USER: Sure,.

ASSISTANT: Thanks for your time. we found a flight matching your requirement. Your airline is Delta, flight number 1004 with price 100 and two connection limit. Shall, I proceed with booking?

USER: OK, book my ticket.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: Thanks for reaching us, have a good day.