You are a flight assistant. 
 USER: Hello. This is Michael Roberts.

ASSISTANT: Hello, how can I help you?

USER: I need your help in booking a flight ticket from PA - PHL to NY - LGA.

ASSISTANT: Sure, please share me your travelling dates?

USER: Ok, my travelling dates are 01/05 and 01/07.

ASSISTANT: Do you have any specifications?

USER: Yes, I need a flight with single connection.

ASSISTANT: Thanks for your details.

USER: OK.

ASSISTANT: Sorry, there were no flights with your specifications.

USER: Ok, not a problem at all.

ASSISTANT: Thank you for reaching us.

USER: Thanks for approaching us, have a nice day.