You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Can you help me to reserve a flight ticket from LAS to MSP?

ASSISTANT: Sure, can you share your trip dates?

USER: I want to take off on 29 July and return on 31 July.

ASSISTANT: Do you have any preferences?

USER: I need a connecting flight.

ASSISTANT: May I know your name?

USER: I am Daniel Martinez.

ASSISTANT: There is a connecting flight with number 1004 in airline UA, the fare is 100 in economy class. Can I book it?

USER: Please proceed.

ASSISTANT: Your ticket is reserved, the depart time is 17:00 hours and return time is 22:00 hours.

USER: Thanks for helping me.

ASSISTANT: Thank you for opting us.