You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am planning to visit Central park at New York, could you please help me with booking a flight ticket from ATL to LGA?

ASSISTANT: Ok, may I know your travelling dates?

USER: I would like to depart on May 20th and return on May 22nd.

ASSISTANT: Can I know your connection limit?

USER: I am looking for a connecting flight.

ASSISTANT: Do you have any other preference?

USER: I am looking for a economy class ticket.

ASSISTANT: May I know your name please?

USER: I am Stephen Mitchell.

ASSISTANT: Sorry, no flights available on your route.

USER: Ok, not an issue. Anyways, thank you for the information.

ASSISTANT: Thank you for reaching us.