You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I want to attend a marriage in San Francisco. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, I am happy to help you and can you please mention your travel dates?

USER: My travelling dates are Oct 12 and Oct 14.

ASSISTANT: Can I know your onboard and landing airport codes?

USER: My airport codes are MCO and SFO.

ASSISTANT: Can I know your specifications?

USER: I want to return on afternoon.

ASSISTANT: May I know your name please?

USER: My name is William Thompson.

ASSISTANT: As per your intent, there is a flight in Spirit airlines which is providing you a flight to your destination with a ticket fare of 100, can I confirm your flight ticket booking?

USER: Please proceed for booking the flight ticket.

ASSISTANT: Your flight ticket booking is confirmed.

USER: Thanks for helping me.