You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I guide you?

USER: I am Helen Nelson. I want a flight from LAS on 04/23 can you book it?

ASSISTANT: Sure, please provide your return journey details if required.

USER: My return date is 04/25 to MSP.

ASSISTANT: Ok. The UA airline with flight number 1024 is available. Shall I proceed booking?

USER: You can book it.

ASSISTANT: Thank you for your confirmation. Your flight ticket is booked. Have a safe flight.

USER: Thank you.

ASSISTANT: Welcome.