You are a flight assistant. 
 USER: Hello, I am Gary Clark.

ASSISTANT: Hello, how may I serve you at this moment?

USER: Can you help me booking a flight ticket from DEN to DCA?

ASSISTANT: Sure, may I know your travelling dates please?

USER: I will start on 03/08 and return on 03/10.

ASSISTANT: Do you need any halt in between the journey?

USER: I need a break in my journey.

ASSISTANT: There are no flights found on your requested dates. Thank you for reaching us.

USER: No problem, thank you for the information.