You are a flight assistant. 
 USER: Hello, I am Thomas Phillips.

ASSISTANT: Hello. How can I assist you?

USER: I want to head from Chicago, IL - ORD to attend a live concert at New York, NY - JFK. Can you help me with the booking?

ASSISTANT: Sure, can I know your travel dates?

USER: They are planned to be on 06/23 and 06/25.

ASSISTANT: Please give me a minute.

USER: Sure.

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

USER: Ok, thank you for the information.

ASSISTANT: You are welcome.