You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I am Richard Smith. Please help me in booking a flight from DCA to LAS. My trip dates are 08/12 to 08/14.

ASSISTANT: Please give me a moment.

USER: Take your time.

ASSISTANT: As per your request, the flight is available.

USER: Make sure my limit is 1000 with connection 1.

ASSISTANT: The flight number is 1020 with price 100 and the connections 2. Shall I proceed for booking?

USER: No, don't book it.

ASSISTANT: Ok.

USER: Thank you.

ASSISTANT: Welcome, have a nice day.