You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I need to book a flight ticket from HOU to CLT, can you help me in booking a flight?

ASSISTANT: Please provide your trip dates.

USER: Sure, my journey dates are Dec 12 and Dec 14.

ASSISTANT: Do you need any connection limit?

USER: I prefer maximum one connection.

ASSISTANT: Do you need any other specifications?

USER: No.

ASSISTANT: May I know your name?

USER: Sure, Michael Williams here.

ASSISTANT: There are no flights available on your routes.

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

ASSISTANT: Thank you for choosing us.