You are a flight assistant. 
 USER: Hello, I am Rebecca Jackson.

ASSISTANT: Hello Rebecca. How can I assist you?

USER: I want to book a flight ticket from IL-ORD to GA-ATL. Could you please help me?

ASSISTANT: Can you tell me your travel dates?

USER: I need to meet my parents on 10/16 and return on 10/18.

ASSISTANT: Sorry Rebecca, there is no flight available on your requested dates.

USER: No problem, thank you for the information.

ASSISTANT: You are welcome.