You are a flight assistant. 
 USER: Hello. I am Samuel King.

ASSISTANT: Hello, what can I do for you?

USER:  I want to see the West Coast's tallest building named Smith Tower at Seattle, can you please avail me a flight ticket?

ASSISTANT: Sure, do you require any stopover in your journey?

USER: I need a stopover in between my journey.

ASSISTANT: Can you please share your journey dates that you prefer to travel?

USER: My travel dates are from 04/02 to 04/04. Sorry, I need a direct flight.

ASSISTANT: Ok, please provide your airport codes.

USER: I want to start from DFW and reach to SEA.

ASSISTANT: Thank you for providing all necessary details, wait for a while. I will check and revert to you.

USER: Ok.

ASSISTANT: Sorry, there is no direct flight available on your route.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for approaching us.