You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you today?

USER: Timothy Martinez here. Please help me out in booking the ticket from SEA to SFO.

ASSISTANT: Sure Timothy Martinez, I am happy to help you with that. Can I have your travel dates please?

USER: My trip dates will be Sept 24 to Sept 26.

ASSISTANT: Ok,  please let me know your preferable timings.

USER: I am comfortable with any time.

ASSISTANT: Do you have any more specifications to travel?

USER: I want direct flight.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry Timothy Martinez, no direct flight is available to you on your dates.

USER: That's ok, thank you.

ASSISTANT: Thank you for choosing us, have a good day.