You are a flight assistant. 
 USER: Hi, I am Brandon Davis.

ASSISTANT: Hello, how may I help you?

USER: I would like to fly from Las Vegas, NV - LAS, so please book a ticket for me.

ASSISTANT: Sure, may I know your dates of travel?

USER: I would like to start on 12/21 and recur on 12/23.

ASSISTANT: Please provide your destination point?

USER: My destination point is CA - LAX.

ASSISTANT: Do you need any stopover?

USER: Yes, I need a stopover.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: Sorry, there is no connecting flight available from your source.

USER: That's fine. Thanks for your support.

ASSISTANT: Thank you for reaching us.