You are a flight assistant. 
 USER: Hi. I am John Harris.

ASSISTANT: Hello, how may I aid you?

USER: I am planning to travel from SFO to LAX, can you help in booking a flight for me?

ASSISTANT: Sure, I am here to help you. Could you please provide your travelling dates to search for the flight?

USER: My travelling dates are 09/25 to 09/27.

ASSISTANT: Ok, please hold on for a moment.

USER: Ok.

ASSISTANT: Ok, there is a flight 1000 in Spirit airline matching your details with price 200. Shall I proceed?

USER: Proceed for booking.

ASSISTANT: Ok, your booking is done.

USER: Thank you.

ASSISTANT: You are welcome.