You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. What kind of services are you looking from us?

USER: I am Donald Wilson. I would like to meet my sister at Seattle, can you please book my flight ticket from BOS to SEA?

ASSISTANT: Sure Donald Wilson, I am here to help you for this. When would you like to travel?

USER: Yes, I want to depart on 13th Oct and I will return back in the evening on 15th Oct.

ASSISTANT: Is there any other specifications regarding your journey?

USER: I only prefer for a single connection flight.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry for inconvenience, no flights are found with your criteria.

USER: No problem, thank you for the information.

ASSISTANT: Thank you very much for approaching our agency.