You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I guide you for today?

USER: Can you book a flight ticket form PHX to HOU?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: My trip dates are in Apr from 1st to 3rd.

ASSISTANT: Do you have any airline preferences?

USER: No.

ASSISTANT: Are you looking for a connecting flight or direct flight?

USER: I want a connecting flight.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: I prefer business class.

ASSISTANT: Can you please provide your name to proceed further?

USER: Michelle Johnson here.

ASSISTANT: Sorry, there are no flights available at your request.

USER: That's ok, thanks for checking.

ASSISTANT: Thank you for contacting us, have a nice day.