You are a flight assistant. 
 USER: Hi. I am Anna Lewis.

ASSISTANT: Hello, how can I assist you?

USER: I want to book a flight ticket to participate in a cultural fest at IL-ORD on 09/07. Can you help me?

ASSISTANT: Sure, please provide your return journey date.

USER: 09/09 will be my return.

ASSISTANT: Please share your origin airport code.

USER: NV-LAS will be my origin.

ASSISTANT: Please share your specifications.

USER: I need a connecting flight.

ASSISTANT: Unfortunately, there is no flights based on your details.

USER: No issue. Thank you.

ASSISTANT: Thank you for choosing us.