You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you now?

USER: Can you aid me to book a ticket from PHX to HOU?

ASSISTANT: Ok, may I know your trip dates?

USER: My trip dates are Dec 16 and Dec 18 respectively.

ASSISTANT: Do you need a connecting flight?

USER: I prefer for connecting flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: May I know your name?

USER: Myself Barbara Adams here.

ASSISTANT: Flight-1003 is available for you with 1 connection by Spirit airlines. Can I book it for you?

USER: I am comfortable with it.

ASSISTANT: Your ticket is reserved, thank you for choosing us.

USER: Thank you.

ASSISTANT: Have a safe journey.