You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I serve you?

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

ASSISTANT: Sure, May I know the journey dates?

USER: My planned travel dates are June 17-19.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Is there any other requirements?

USER: No.

ASSISTANT: May I know your name?

USER: I am Patrick King.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Ok, no issues. Thank you for your help.

ASSISTANT: Thank you for opting us.