You are a flight assistant. 
 USER: Hello. I am Anna Anderson.

ASSISTANT: Hello, how may I aid you?

USER: Can you help me in booking a flight ticket from PA - PHL to NY - LGA?

ASSISTANT: Sure, we are here to help you. May I know your dates of travel?

USER: I want to fly on 04/22 and return on 04/24.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry, there were no flights found on your route.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for reaching us.