You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: Can you find a flight for me from SEA to DFW?

ASSISTANT: Ok, please can I know your journey dates to book?

USER: Ok, my preferable dates are Mar 17 to 19.

ASSISTANT: Ok, I will check for the flights availability. May I know the specifications?

USER: I need a direct flight.

ASSISTANT: Ok, please let me know your other specification.

USER: I don't have.

ASSISTANT: May I know your name?

USER: Sure, I am Jacob Lewis.

ASSISTANT: There are no flights available at your location provided to book.

USER: It's ok, thanks for checking.

ASSISTANT: Ok, thank you for availing our agency.