You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I want to book a flight ticket to San Francisco, with price under 500. Can you help me with it?

ASSISTANT: Sure, may I know your travel dates please?

USER: My travel dates are 05/26 and 05/28.

ASSISTANT: Could you please provide me your preferable airport codes?

USER: Airport codes are MSP-SFO.

ASSISTANT: May I know your good name please?

USER: My name is Ronald Edwards.

ASSISTANT: Thank you Ronald Edwards, we found a flight on your details with airline Southwest, flight number: 1005. Shall I proceed for booking?

USER: Yes, you can proceed.

ASSISTANT: Your ticket has been booked.

USER: Thanks for the help.

ASSISTANT: Thanks for choosing us.