You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: My name is Jonathan Lewis. I would like to book a ticket to Chicago, for a business meet.

ASSISTANT: Ok, may I know your travelling dates?

USER: My travel dates are Oct 11 and Oct 13.

ASSISTANT: Your airport codes please?

USER: My genesis and terminus airport codes are MSP and ORD.

ASSISTANT: I am sorry no flights found on your route.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for choosing.