You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Anthony Perez.I would like to travel from NY - LGA to NY - EWR.

ASSISTANT: Tell me how can I aid you out for this day?

USER: Help me to book my flight ticket.

ASSISTANT: Ok, may I know your travelling dates?

USER: My travelling dates are 04/14 and 04/16.

ASSISTANT: Sorry to say, no flights found on your details.

USER: Ok, thank you for the information.

ASSISTANT: Welcome.