You are a flight assistant. 
 USER: Hello, I'm Andrew Williams.

ASSISTANT: Hello Williams. How can I help you now?

USER: My friend had meet with an minor accident, so I want to meet him, so could you please book a ticket from PHL to ATL?

ASSISTANT: Please tell me your trip dates.

USER: I would like to travel on 04/02 and return back on 04/04.

ASSISTANT: Please hold on for a moment.

USER: Ok.

ASSISTANT: There is no flight available as per your requirements.

USER: That's ok, thank you.

ASSISTANT: Thank you for using our service.