You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I would like to book my ticket from ATL to Houston, HOU. Can you please help me with booking a flight ticket?

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

USER: My planned travel dates are June 26 and June 28.

ASSISTANT: Do you have any limits on number of connections?

USER: I am looking for a single connecting flight in my journey.

ASSISTANT: Do you have any another preferences on your journey?

USER: I would like to book my ticket in business class.

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

USER: Sure, myself Barbara Carter.

ASSISTANT: Sorry,no flights are available on your specified dates.

USER: Not an issue, anyway thank you for the information.

ASSISTANT: Welcome, thank you for reaching us.