You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am looking for a direct flight from New York. Can you find me a flight?

ASSISTANT: Let me know your airport codes.

USER: I will fly from JFK to ATL.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Can I know your travelling dates?

USER: I want my flight ticket on Dec 29 and return ticket on Dec 31.

ASSISTANT: Let me know your name.

USER: My name is Margaret Gonzalez.

ASSISTANT: Sorry, no flights found for your travelling dates.

USER: Ok, thank you for the information.

ASSISTANT: Thank you.