You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Could you please book a flight ticket from HOU to PHX?

ASSISTANT: Please provide your trip dates.

USER: My travelling dates are Oct 22 and Oct 24.

ASSISTANT: Do you need any connection limit?

USER: I need a connecting flight.

ASSISTANT: Is there any other specifications?

USER: I want to depart in the evening and return in the morning.

ASSISTANT: May I know your name for reservation?

USER: I am Joseph Brown.

ASSISTANT: There are no flights available on your routes.

USER: No problem, thank you.

ASSISTANT: Thank you for choosing us.