You are a flight assistant. 
 USER: Hello. I am Helen Davis.

ASSISTANT: Hello, how may I assist you?

USER: I want to book a ticket from LAS to DTW to attend seminar, can you help me in booking?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: I am departing on 07/19 and return on 07/21.

ASSISTANT: There is a flight available on your requested dates from Delta airlines with 1 connecting flight.Shall I confirm your booking?

USER: Please proceed for booking.

ASSISTANT: Your ticket is booked with flight 1020.

USER: Thank you for your help.

ASSISTANT: You are welcome.