You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Help me in booking a flight ticket from DEN to LAS.

ASSISTANT: Sure, can you share your journey dates?

USER: I need to travel in Dec 03 and Dec 05.

ASSISTANT: Do you have any specifications?

USER: Make sure to book an connected flight.

ASSISTANT: May I know your name?

USER: I am Cynthia Thomas.

ASSISTANT: Sorry, there is no flight on your given dates.

USER: Ok, no issues. Thanks for checking.

ASSISTANT: Thank you for reaching us.