You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Kevin Wilson.

ASSISTANT: Kevin, how may I help you?

USER: Can you help me to book a flight with 500 price limit?

ASSISTANT: Sure, may I know your origin and destination airport codes?

USER: My travelling airport codes are ORD and IAH.

ASSISTANT: Please provide your trip dates.

USER: My planned dates are 05/01 and 05/03.

ASSISTANT: Please hold on for a while.

USER: Sure.

ASSISTANT: We found a flight with 1 connection from Spirit airlines.

USER: Yes, proceed.

ASSISTANT: Your ticket is confirmed in flight 1006.

USER: Thank you.

ASSISTANT: Thank you for choosing us.