You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I have planned to book a plane ticket from SFO to PHX, can you assist me in booking my ticket?

ASSISTANT: May I know your travel dates?

USER: My preferred dates are Aug 9th and Aug 11th.

ASSISTANT: Would you like to travel in connecting flight or direct flight?

USER: I need to travel in direct flight.

ASSISTANT: Is there any other concern?

USER: No.

ASSISTANT: May I know your name please?

USER: Daniel Smith.

ASSISTANT: No flights found as per your preferences at the moment.

USER: No problem, thank you for searching.

ASSISTANT: Thank you for choosing us.