You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Please book me a ticket from ATL to HOU to meet my family.

ASSISTANT: Your travelling dates please?

USER: I have planned to travel on Mar 17th and return on 19th.

ASSISTANT: Do you have any specifications?

USER: I like business class with connecting flight.

ASSISTANT: May I know your name please?

USER: Myself Jason Johnson.

ASSISTANT: I am sorry no flights found on your route.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for choosing us.