You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Benjamin Turner. I want to book a ticket from BOS to SEA to meet my parents.

ASSISTANT: Can I know your travel dates?

USER: I am departing on 06/03 and return on 06/05.

ASSISTANT: Sorry Turner, there is no flight available on your requested dates.

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

ASSISTANT: You are welcome.