You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Can you aid me in booking a flight ticket from PHX to HOU?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: I am planning to start on Jan 5 and return back on Jan 7.

ASSISTANT: Do you have any preferences about flight connections?

USER: Make sure that it is a direct flight.

ASSISTANT: Do you have any preferences about class?

USER: I prefer to return back in afternoon.

ASSISTANT: Please mention your name.

USER: I am Carolyn Turner.

ASSISTANT: There are no flights found under your preferable details.

USER: No issues. Thank you for checking.

ASSISTANT: Welcome, have a great day.