You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I want a direct flight from PHX to LAX. Can you make a reservation for me?

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

USER: Sure, I want to airborne on 03/26 and recur on 03/28.

ASSISTANT: Fine, please be on hold.

USER: Ok.

ASSISTANT: May I know your good name please?

USER: Yes, I am Gary Lee.

ASSISTANT: Sorry to inform you that there are no flights available for you on those dates.

USER: Ok, not a problem. Anyway's thank you for your information.

ASSISTANT: Thank you for reaching us.