You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I planned to meet my friend in PHL, can you please help me to book a flight ticket from LGA?

ASSISTANT: Sure, may I know your planned travel dates?

USER: I prefer to travel on May 20 and May 22.

ASSISTANT: Can you please share your connection limit?

USER: I need a direct flight.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: May I know your name please?

USER: I am Karen Walker.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for opting us.