You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Can you please help me in booking the flight ticket from  LAS to DEN?

ASSISTANT: Sure, may I know your itinerary dates?

USER: My travel dates are 10/17 and 10/19.

ASSISTANT: Is there any airline preference for you?

USER: I prefer to travel in normal cost airlines.

ASSISTANT: Do you need any break in your journey?

USER: I need a single connection.

ASSISTANT: Do you have any other preferences?

USER: No.

ASSISTANT: Sorry to inform you that, there are no flights available with your requirements.

USER: Thank you and my name is Susan Taylor.

ASSISTANT: Thank you for choosing us.