You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: I am Brian Green. I want to book a flight ticket on 06/26 and 06/28, so can you help me with booking please?

ASSISTANT: Sure, I can help you out.

USER: Thank you.

ASSISTANT: Please share me your nearest airport codes.

USER: Sure, my airport codes are NY-LGA and NV-LAS.

ASSISTANT: Do you need any break?

USER: Yes, I need a break.

ASSISTANT: We found a Southwest airline, flight number:1007 and the price is 200.

USER: Please proceed with booking.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for picking us.