You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Samuel Campbell here. I want to book a flight reservation on the route from OAK - BOS, can you help me?

ASSISTANT: Sure, can you please share your travel dates?

USER: My travelling dates will be from 12/10 to 12/12.

ASSISTANT: Let me check for the availability of flight.

USER: Ok, take your time.

ASSISTANT: Samuel, there is no flight available at your requested dates.

USER: Ok, no issues with it. Thank you for checking.

ASSISTANT: Thank you for reaching us.