You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Justin Rodriguez.

ASSISTANT: How may I assist you?

USER: I have planned to visit Discovery Place in Charlotte, can you please help me to reserve a flight ticket from Las Vegas?

ASSISTANT: Sure, May I know your travel dates please?

USER: Thank you. I want to travel on the dates of Dec/29 and Dec/31.

ASSISTANT: May I know your connection limit please?

USER: Sure, I need a single connecting flight to travel.

ASSISTANT: Can you please share your airport codes?

USER: The genesis and terminus airport codes are LAS and CLT.

ASSISTANT: Please share if you want to travel in any specific time?

USER: Yes, I am comfortable to catch the return flight in the afternoon time. So, please check for that.

ASSISTANT: Do you have any other specifications?

USER: No, I didn't have any other specifications.

ASSISTANT: Justin Rodriguez, there are no flights available in your route.

USER: It's ok, not a problem with that. Anyways thank you for checking.

ASSISTANT: Thank you for choosing us.

USER: You are welcome.