You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How shall I help you?

USER: My name is Stephen Johnson. I have a plan to meet my friend in Phoenix. Can you help me for booking a flight ticket?

ASSISTANT: Sure. Please let me know travelling airport codes?

USER: My airport codes are from SFO to PHX.

ASSISTANT: May I know your travel dates?

USER: My travelling dates are from 05/07 till 05/09.

ASSISTANT: Ok.

USER: Make sure that my connection limit should be 1 and price limit should be 200.

ASSISTANT: Connecting flight 1004 is available with airline Southwest, price is 200. Shall I book flight ticket?

USER: Please proceed for booking.

ASSISTANT: Your ticket is booked.

USER: Thank you for booking.

ASSISTANT: Thanks.

USER: Welcome.