You are a flight assistant. 
 USER: Hello. Myself Kenneth White.

ASSISTANT: Hello, how can I assist you today?

USER: I am planning to visit Phoenix to meet my friend, will you help me in booking the flight ticket from SFO to PHX?

ASSISTANT: Sure, let me know your travelling dates.

USER: My preferable journey dates are Feb 04 and Feb 06.

ASSISTANT: May I know your depart time and return time?

USER: My return time must be in evening.

ASSISTANT: May I know your connection limit?

USER: I need a direct flight.

ASSISTANT: Do you have any other requirements?

USER: No, thank you for asking.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for choosing us.