You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I am Gregory Scott from Denver. Please book a flight ticket within the fare of 500 to San Francisco.

ASSISTANT: Sure, I am here to help you in booking. Could you please share your travel dates?

USER: My travel dates are Mar 01 and Mar 03.

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

USER: My journey airport codes are DEN and SFO.

ASSISTANT: Please allow me a moment.

USER: Sure.

ASSISTANT: Flight 1021 in Frontier airlines is available for you with 1 stopover and it costs you 100. Can I proceed?

USER: Yes, proceed.

ASSISTANT: Your booking is confirmed.

USER: Thank you.

ASSISTANT: Thank you for reaching us, have a safe journey.