You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I need to book a flight ticket from DFW to LGA, Can you please help me for booking?

ASSISTANT: Sure, please share your journey dates?

USER: I would like to travel on 11/30 to return on 12/02.

ASSISTANT: Do you have any specifications?

USER: I need a business class.

ASSISTANT: May I know your good name?

USER: Carol Adams here.

ASSISTANT: Sorry, no flights found on your given details.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for choosing us.