You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you for the day?

USER: I am Pamela White. Can you help me to book a flight ticket from SEA to BOS?

ASSISTANT: Sure, I will help you with that. May I know your travelling dates, please?

USER: My travelling dates are Sept 2 and Sept 4.

ASSISTANT: Do you have any particular time for departing and returning?

USER: I would like to return in the evening.

ASSISTANT: Do you have any other specifications?

USER: I need a single connecting flight.

ASSISTANT: There is no flight available on this route as per your travel dates.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for reaching us, have a great day.