You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Will you please help me with booking a flight ticket from DFW to Las Vegas, LAS?

ASSISTANT: Sure, can you share your trip dates?

USER: My planned trip dates are from Oct 31 to Nov 02.

ASSISTANT: Do you prefer either connecting or direct flight?

USER: I need a connecting flight in my journey.

ASSISTANT: Is there any class preference?

USER: No, I am comfortable with any class.

ASSISTANT: Are there any other specifications?

USER: No, I din't have any other specifications.

ASSISTANT: Please forward your name.

USER: Sure, myself Brandon Rodriguez.

ASSISTANT: Sorry, there are no flights found on your specified trip dates.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for availing us.

USER: Thank you for your service.