You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: I want to book a ticket from LAS to CLT, can you help me?

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

USER: My trip dates are Nov 20 and 22.

ASSISTANT: Do you have any class specifications?

USER: I want to travel in business class.

ASSISTANT: May I know your name for the documentation purpose?

USER: I am Ashley Lee.

ASSISTANT: Do you have any another specifications on this journey?

USER: I need a connecting flight.

ASSISTANT: Unfortunately, no flights available on your requirements.

USER: No problem, thanks for checking.

ASSISTANT: Welcome, thank you for reaching us.