You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I need to buy a plane ticket from LGA to PHL. Can you help me?

ASSISTANT: Sure, may I know your trip dates please?

USER: I will start on Feb 15th and return on Feb 17th.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need 1 lay by.

ASSISTANT: Any other requirements to be met?

USER: No.

ASSISTANT: Ok, let me know your name.

USER: I am Stephanie Wilson.

ASSISTANT: Sorry, there is no flight available as per your request.

USER: That's alright, thanks for your assistance.

ASSISTANT: Most welcome.