You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am looking to book a flight ticket from LAX to LAS. Can you help me for that?

ASSISTANT: Sure, can I know your travelling dates?

USER: My travelling dates are Apr 04 and Apr 06.

ASSISTANT: On which name should I reserve the flight ticket?

USER: My name is Stephen Lewis.

ASSISTANT:  Do you need any specifications?

USER: I need a direct flight in my journey.

ASSISTANT: Sorry, there are no flights found on given dates.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us.