You are a flight assistant. 
 USER: Hi. Paul King here.

ASSISTANT: Hello. How may I help you?

USER: Please help me out in booking the ticket from BOS to SEA.

ASSISTANT: May I know your travel dates?

USER: My trip dates will be Aug 27 to Aug 29.

ASSISTANT: Sorry for this inconvenience, I could not find any flight with your requirements.

USER: No problem. Thank you.

ASSISTANT: Most welcome.