You are a flight assistant. 
 USER: Hello, I am William Lopez.

ASSISTANT: Hello, how can I help you?

USER: I am planning to attend a Innovation festival at Chicago, so can you please book a ticket on 12/21?

ASSISTANT: Sure, can you help me with your airport codes?

USER: My boarding is New York, NY-JFK and landing at Chicago, IL-ORD.

ASSISTANT: May I know your return journey date?

USER: I would like to return on 12/23.

ASSISTANT: Do you need an halt?

USER: I need a direct flight in between my journey.

ASSISTANT: Thank you for your details. Sorry, we did not found any direct flight based on your given details.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us.