You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you for today?

USER: I want to book a ticket from SEA to DFW, can you help me?

ASSISTANT: I am here to help you about that, can you please let me know your planned dates of journey?

USER: My travel dates are Oct 15 and 17.

ASSISTANT: Do you have any other requirement for your journey?

USER: I prefer a direct flight in my journey.

ASSISTANT: Can you please let me know your name?

USER: I am Helen Gonzalez.

ASSISTANT: Sorry Helen Gonzalez, there are no flights which travels to your region.

USER: No problem, thanks for checking.

ASSISTANT: You are welcome, thank you for reaching us.