You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I render you?

USER: I am David Davis. I want to book a flight ticket to attend a live concert which is held on 09/05 and I intend to return on 09/07. So, can you help me with booking please?

ASSISTANT: Sure, we are glad to help you.

USER: Thank you.

ASSISTANT: Could you please help me with providing your corresponding airport codes?

USER: Yes, my airport codes are Las Vegas, NV-LAS and Seattle, WA-SEA.

ASSISTANT: Do you prefer any halt in between journey?

USER: Yes, I need a connecting flight.

ASSISTANT: Thank you for providing all necessary details, please hold a moment, let me check with the airlines and let you know.

USER: Ok.

ASSISTANT: I found AA airline is available on your dates which matches your essentials and it costs you only 100. Shall I proceed with a connecting flight?

USER: Please proceed with booking.

ASSISTANT: Your booking is done in flight number 1015.

USER: Thank you for the help.

ASSISTANT: Thank you for choosing our service.