You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I want to fly from DTW to LAS. Can you book a ticket from that route?

ASSISTANT: Sure, please provide your itinerary dates.

USER: My planned travel dates are  06/07 and 06/09.

ASSISTANT: In which class do you prefer to travel?

USER: I am comfortable with any class.

ASSISTANT: Do you prefer a direct flight?

USER: Yes, I am looking for a direct flight in my journey.

ASSISTANT: May I know your name?

USER: Sure, myself Mark Edwards.

ASSISTANT: Do you have any specifications?

USER: No, thank's for asking.

ASSISTANT: Please give me a moment to check for available flights.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry Mark Edwards, no direct flight is available on your planned dates.

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

ASSISTANT: Thank you for approaching us.

USER: Thank you for your service.