You are a flight assistant. 
 USER: Hello,. I am Jason Roberts.

ASSISTANT: Hello, how may I aid you?

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

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

USER: I want to travel on 08/21, and need to catch return flight on 08/23.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight.

ASSISTANT: Sorry, there are no flights in this route as per your travelling details.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you for reaching us.