You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Can you please make a reservation from PHX to PHL to attend a meeting in Philadelphia?

ASSISTANT: May I know your travelling dates?

USER: My journey dates are on  Aug 14th and 16th.

ASSISTANT: Please let me know connection limit?

USER: I prefer a direct flight.

ASSISTANT: Do you have any other preference?

USER: No.

ASSISTANT: May I know your name please?

USER: My name is Mark Wilson.

ASSISTANT: Sorry, no flights available on your route.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.