You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Richard Clark.

ASSISTANT: How may I help you?

USER: I am looking to book a flight with single connection. Can you help me for booking a flight ticket?

ASSISTANT: Sure, I will try to find a flight based on your requirements. May I know your airport codes please?

USER: My airport codes are DFW and LGA.

ASSISTANT: On which dates you like to travel?

USER: My travelling dates are from 10/09 till 10/11.

ASSISTANT: Just a moment please. There is flight with 1020 number, can I proceed for booking in spirit airlines?

USER: If price is under 5000, please proceed for booking.

ASSISTANT: Your booking is done it costs you only 100. Have a great journey.

USER: Thank you for booking.