You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you at this minute?

USER: I need to travel PHX and BOS, can you reserve flight ticket?

ASSISTANT: Ok, I am here to help you with that. Can I know your planned trip dates?

USER: My travelling dates are Mar,01 and Mar,03.

ASSISTANT: May I know your good name?

USER: Myself Susan Moore.

ASSISTANT: Do you have any other requirements?

USER: I prefer direct flight.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: Sorry to say that, there are no flights available based on your travelling dates.

USER: That's ok, thank you for the information.

ASSISTANT: Thank you for reaching us.