You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I need a direct flight for my journey to SFO from LAX to meet my friend. Can you please assist me in booking a flight ticket?

ASSISTANT: Sure, I will help you. When would you like to plan your journey?

USER: Thank you for your concern. I have planned to make a move for my journey on Apr 1st and need to catch a return flight on Apr 3rd.

ASSISTANT: Can I have your name please for booking purpose?

USER: Sure, my name is Richard Baker.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Richard Baker, no flights has been found on your planned travel dates.

USER: Not a problem, anyways thank you for the information.

ASSISTANT: Thank you for approaching us.