You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Ryan Perez here.

ASSISTANT: How may I assist you today?

USER: I would like to book a ticket from LAX to JFK, can you please help me with that?

ASSISTANT: Sure, I can help you with that. May I know your preferable travel dates please?

USER: The travel dates are from 09/14 to 09/16.

ASSISTANT: Ok, please wait for a while.

USER: I want a direct flight.

ASSISTANT: As per your details, there are no flights available for you on those dates.

USER: That's ok, thank you for your help.

ASSISTANT: Thank you for choosing us, have a great day.