You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How can I assist you today?

USER: Please could you book a ticket from Phoenix, AZ-PHX to Houston, TX-HOU.

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

USER: Departure date is 12/16 and return date is 12/18.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, there is a flight with price 100 and the connections 1 is available. Shall I confirm your ticket?

USER: Please provide direct flight.

ASSISTANT: Please mention the name.

USER: I am Elizabeth Hill.

ASSISTANT: There is no flights available with connections 0.

USER: Thanks for your assistance.

ASSISTANT: Welcome, have a great day.