You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

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

ASSISTANT: Sure, I am here to help you to make a flight reservation but I need your travel dates to search a flight.

USER: Thank you for your response, I want to take off on June 06 and book my return ticket also on June 08.

ASSISTANT: Would you like to travel in a connecting flight or a direct flight?

USER: I will prefer 1 break in between my journey.

ASSISTANT: Is there any other preferences that you would like to add before booking?

USER: I want to depart in morning time.

ASSISTANT: May I know your name please?

USER: Sure, my name is Ashley Lee.

ASSISTANT: Ok, please wait a moment I'll search best flight for you.

USER: Ok.

ASSISTANT: Thank you for waiting, we are unable to provide flight in between your journey routes due to some technical up-gradation at destination airport.

USER: Oh! It's ok, no problem.

ASSISTANT: Thank you for choosing us.

USER: Thank you for your information.