You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I support you today?

USER: I am Jonathan Jones. I am planning to attend a Tennis competition in Philadelphia PHL from SFO. Can you find a flight ticket for me?

ASSISTANT: Sure, please share me your planned journey dates?

USER: Sure, my planned trip dates are on Oct 18 and return on Oct 20.

ASSISTANT: May I know your depart and return flight timing?

USER: I want to return in the evening time.

ASSISTANT: Please mention your connection limit?

USER: Yes, I need a single connecting flight to travel.

ASSISTANT: Do you have any other preferences?

USER: No.

ASSISTANT: Please wait for a moment.

USER: Ok, I will.

ASSISTANT: Thank you for waiting, sorry there is no flight available on your given journey route.

USER: That's fine, no problem. Thank you for your help.

ASSISTANT: Thank you for reaching us, we hope see you again.