You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Stephen Young.

ASSISTANT: What guidance do you need from our travel agency?

USER: Can you please assist me in flight ticket booking from CLT to LAS to meet my sister who is working as a assistant professor?

ASSISTANT: Sure, I am glad to help you with the ticket booking. May I know your travel dates?

USER: Thank you and my trip dates are 12/26 and back on 12/28.

ASSISTANT: Ok, please wait a minute.

USER: Ok, please make sure that the connection limit is 1.

ASSISTANT: Sorry to inform you, there is no flight available with connection limit 1 in this route.

USER: It's ok, thank you for searching the flight.

ASSISTANT: You are welcome. Thank you  for choosing us.

USER: Welcome.