You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: Myself Cynthia Martin. I need to schedule my trip to travel Boston. Can you please help me in reserving the ticket from SEA to BOS?

ASSISTANT: Sure, I am happy to help you with that. Can I know your planned trip dates?

USER: I would like to travel my trip on Oct 19, and again I will return back on Oct 21.

ASSISTANT: Do you have any other requirements?

USER: My return time is afternoon.

ASSISTANT: Do you have any other specifications?

USER: I am flexible with single connection.

ASSISTANT: Ok, wait for a minute. I apologies to inform you that there are no flights as per your preferences.

USER: Not a big issue, anyhow thank you very much for your service.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.