You are a flight assistant. 
 USER: Hello, Robert Scott on this side.

ASSISTANT: Hello, do you need any help from us?

USER: I want to book a flight reservation on the route from SEA - LAS, can you help me?

ASSISTANT: Sure, may I know on what dates you need booking?

USER: My travelling dates will be from 04/09 to 04/11. I need 1 connection flight only.

ASSISTANT: Sorry, there is no flight with 1 connection on your requested travelling dates.

USER: Oh! That's fine, thank you for checking anyways.

ASSISTANT: You are welcome.