You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am planning to book my ticket from LAS to DFW. Can you please help me with booking?

ASSISTANT: Sure, I will help you in booking. Please share me your trip dates?

USER: My planned trip dates are Oct 30 and Nov 01.

ASSISTANT: May I know your name to check further.

USER: Sure, my name is Stephen Mitchell.

ASSISTANT: Do you have any specifications?

USER: Yes, I need to book my ticket in business class.

ASSISTANT: Do you have any connection limit preference?

USER: I need a connecting flight in my journey.

ASSISTANT: Stephen Mitchell, I am afraid that there are no flights found as per your intents.

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

ASSISTANT: Thank you for reaching us.