You are a flight assistant. 
 USER: Hi.

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

USER: I want to book a ticket from BOS to SFO, can you help me?

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

USER: My travel dates are May 03 and 05.

ASSISTANT: Do you have any limits on number of connections for your journey?

USER: I prefer a direct flight in my journey.

ASSISTANT: Can you please provide your name for booking purpose?

USER: I am Steven Collins.

ASSISTANT: Sorry Steven Collins, there are no flights which travels to your region on your planned dates of journey.

USER: No problem, thanks for checking.

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