You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I want to book a ticket from LAS to DFW.

ASSISTANT: May I know your desired travel dates please?

USER: I am travelling from Sept, 18 to Sept, 20.

ASSISTANT: May I know your name please?

USER: My name is Patricia Roberts.

ASSISTANT: There is a flight with connection limit 1 and fare 200, shall I proceed for booking?

USER: Please book a flight.

ASSISTANT: Your ticket is booked, flight number 1003.

USER: Thanks.

ASSISTANT: Thank you for opting us.