You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: I am Dennis Martin. I need to book a flight ticket from DEN to SEA, Can you please help me for booking?

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

USER: I would like to travel on 09/14 to return on 09/16.

ASSISTANT: Do you need any specifications?

USER: Yes,I need a connecting flight.

ASSISTANT: Ok, please be on hold. Sorry, there are no flights in this route as per your travelling details.

USER: That's alright. Thanks for your assistance.

ASSISTANT: Thank you for approaching us.