You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: William Brown here. I want to book a ticket for attending a function in my aunt home, hope your helping me on that.

ASSISTANT: Sure, I can help you with that. Can you please provide the source and the destination airport codes?

USER: Sure, my airport codes are from CLT to MSP.

ASSISTANT: William, can you please help m e with your travelling dates?

USER: I would like to travel on 10/21 and 10/23, make sure connection limit should be 1.

ASSISTANT: Ok, let me check for the availability of flight.

USER: Ok.

ASSISTANT: William, there is a flight available at your request with price 0 connection. I am sorry to inform you that there is no flight available at your request.

USER: It's ok, no issues.

ASSISTANT: Thank you for contacting us.

USER: Thank you for your quick response.

ASSISTANT: You are welcome.