You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I would like to meet my old friend at Las Vegas, please help me in booking a ticket from CLT to LAS.

ASSISTANT: Sure, let me know your good name please.

USER: My name is Amy Gonzalez.

ASSISTANT: When do you want to travel?

USER: My planned trip dates are on Oct 18 and Oct 20.

ASSISTANT: Is there any connection limit for you?

USER: Yes, I need a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: No, thank you for asking.

ASSISTANT: Sorry, there are no flight services on your required dates.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for opting us.