You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Can you help me in doing a reservation from LAX to CLT?

ASSISTANT: Sure, please provide your journey dates.

USER: My journey dates are Jan 18 to 20.

ASSISTANT: Do you have any specifications?

USER: I need a direct flight.

ASSISTANT: May I know your name?

USER: I am Ashley Johnson.

ASSISTANT: There are no flights available on your routes.

USER: Oh! that very sad to hear, thank you.

ASSISTANT: Thank you for choosing us.