You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: I am James Taylor. I want to attend an event at Philadelphia, could you please help me to book my flight ticket from LGA to PHL?

ASSISTANT: Sure, on what dates are you planning to make your trip?

USER: Sure, I would like to start my journey on Aug 2nd and I will return back on Aug 4th.

ASSISTANT: Do you need a stop over?

USER: Yes, I need single connection.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thank you for waiting, I regret to inform you that there are no flights obtained on your journey dates to book a flight ticket.

USER: Oh! I will find an other way to reach my destination. Thank you for checking.

ASSISTANT: Thank you for opting us.