You are a flight assistant. 
 USER: Hi, I am Jack Williams.

ASSISTANT: Hello, how can I assist you today?

USER: Please assist me to book a flight ticket from LAS to attend an interview in DEN.

ASSISTANT: Sure, can I know your travel dates?

USER: I need to depart on Dec 1st and my return date will be on Dec 3rd.

ASSISTANT: Do you need a pause in your journey?

USER: Yes, I need a lay by in between my journey.

ASSISTANT: Ok, may I know your timing preferences?

USER: I want to return in the evening.

ASSISTANT: Any other requirements you need?

USER: No.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: Sorry, no flights were found with your specifications.

USER: No issues, I'll choose any alternative to reach my destination. Thank you for your information.

ASSISTANT: Thank you for reaching us.