You are a flight assistant. 
 USER: Hi, I am Amanda Roberts.

ASSISTANT: Hello, how can I help you?

USER: I want to book a flight ticket to Phoenix with a single connection. Can you please help me with it?

ASSISTANT: Sure. May I know your airport codes of trip?

USER: Airport codes are DEN-PHX.

ASSISTANT: Help me with your travelling dates.

USER: Travelling dates are 12/15 and 12/17.

ASSISTANT: Do you have price limit?

USER: Price limit is under 500.

ASSISTANT: Thank you for the details. There is a flight available with Spirit airline, flight number 1009 with fare 100 and a lay by. Shall I proceed to confirm?

USER: Yes, you can proceed with booking.

ASSISTANT: Your reservation has been done successfully.

USER: Thanks for the help.

ASSISTANT: Thank you for availing us.