You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I help you?

USER: I am Gary Allen. Can you please book a flight ticket from HOU to MSP?

ASSISTANT: Sure, may I know your journey dates?

USER: My journey start on 05/17 and attend to my friend marriage on 05/18, need to return back on 05/19.

ASSISTANT: Do you have any specifications?

USER: Price should be up to 500. I need a connecting flight.

ASSISTANT: There is a connecting flight with number 1017 in airline UA, the fare is 100. Can I book it?

USER: Ok, proceed.

ASSISTANT: Your ticket is reserved.

USER: Thank you for helping me.

ASSISTANT: Thank you for opting us.