You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I do for you now?

USER: William Gonzalez here. Do you have any flight from PHL to DFW?

ASSISTANT: Ok. To make a reservation, do you have any preferences?

USER: Yes, please make a reservation on this dates 08/04-08/06.

ASSISTANT: Is there any connection limit in your journey?

USER: Make sure that flight must have 1 stop.

ASSISTANT: Ok. But we have a direct flight with your information. Shall I reserve it?

USER: No, thanks for your valuable information.

ASSISTANT: Fine, thank you for opting us.