You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I want to book a flight ticket from Orlando to Chicago on 09/19 and return on 09/21, so can you help me with booking please?

ASSISTANT: Sure. Help me with your airport codes please.

USER: Ok, my airport codes are FL-MCO and IL-ORD.

ASSISTANT: Do you need a connecting flight?

USER: Yes, I need a connecting flight.

ASSISTANT: Thank you for being patience, there is a flight available with SouthWest airline, flight number 1005 with fare 100 and a lay by.

USER: Please proceed.

ASSISTANT: I need your confirm booking.

USER: Thank you.

ASSISTANT: I need your name to confirm booking.

USER: Ok, my name is Gary Anderson.

ASSISTANT: Your reservation has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for reaching us.