You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Can you please reserve me a flight ticket from PHL to JFK to attend a film festival?

ASSISTANT: Yes, can you tell me your dates of travel?

USER: My planned journey dates are July 10 and July 12.

ASSISTANT: Do you have any other specifications?

USER: I need a flight with single connection.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: Sorry to inform you that there are no flights found on your requested dates.

USER: Ok, no problem.

ASSISTANT: Can I know your name?

USER: I am William Clark.

ASSISTANT: Thank you for contacting us.

USER: Thank you.