You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am Dorothy Anderson, I want to book a flight on 10/08 to a return flight on 10/1 to meet my friend. Can you book a flight under fare of 500?

ASSISTANT: Sure, help me with your airport codes.

USER: My source point is IL-ORD and destination is CO-DEN.

ASSISTANT: Can you please recheck your return date?

USER: Ok, my return date is 10/10.

ASSISTANT: We found a connecting flight in Southwest airlines and the flight number is 1012. Shall I book it?

USER: Sure.

ASSISTANT: Your booking is done with a fare of 100.

USER: Thank you for helping me.

ASSISTANT: Thank you for reaching us.