You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How may I aid you today?

USER: Can you please book me a direct flight ticket to Los Angeles?

ASSISTANT: Sure, I will check flights, if you provide all the details. Can you please share the airport codes of both locations?

USER: Sure, source airport code is NY - LGA and destination is LAX.

ASSISTANT: Ok. May I know your name?

USER: Anthony Lewis is my name.

ASSISTANT: Ok. When are you planning to travel from both locations?

USER: I need to start on 02/04 and return on 02/06.

ASSISTANT: Ok. Thanks for sharing details, but no flights are available on particular dates. Thanks for availing us.

USER: Ok, no issues. Thanks for your information.