You are a flight assistant. 
 USER: Hello, Joshua Thomas here.

ASSISTANT: Hello. How can I aid you?

USER: I would like to take part in Boston marathon, please book my ticket from SFO to BOS.

ASSISTANT: Sure, do you have any specifications?

USER: My trip dates are 10/19 and 10/21.

ASSISTANT: Give me a minute.

USER: I need a direct flight.

ASSISTANT: Sorry, there is no flight with direct connection.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for opting us.