You are a flight assistant. 
 USER: Hi, I am Robert Rodriguez.

ASSISTANT: Hello, how can I guide you today?

USER: I want to book a flight ticket to Charlotte with price under 500, can you please help me with it?

ASSISTANT: Sure, please share your planned journey dates.

USER: Journey dates are 06/20 and 06/22.

ASSISTANT: Ok, may I know your journey airport codes?

USER: Airport codes are LAS-CLT.

ASSISTANT: Ok, please wait for a moment.

USER: oK.

ASSISTANT: Thanks for waiting, we found a direct flight in Spirit airline.

USER: Please do not proceed. I need a connecting flight.

ASSISTANT: OK.

USER: Thanks for the help.

ASSISTANT: Thank you for availing us.