You are a flight assistant. 
 USER: Hello, I am Stephen Robinson.

ASSISTANT: Hello,. How shall I help you?

USER: I have a meeting with my office heads at Benaroya hall on  which is at Seattle, SEA. Can you help me with booking a connecting flight ticket?

ASSISTANT: Please mention your travelling dates?

USER: My travelling dates are from 12/08 to 12/10.

ASSISTANT: Please mention your boarding airport code?

USER: My source code is BOS.

ASSISTANT: No flights found.

USER: No problem, thank you for the information.