You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: Betty Anderson here, I am planning to book a fight ticket to BOS from IAD. Can you please help me out?

ASSISTANT: Sure, I will help you with this. Can you please share your journey dates?

USER: Sure, my planned travelling dates are Jan 27 and Jan 29.

ASSISTANT: Do you have any specifications to be met?

USER: Yes, I need a flight having 1 connection to reach my final destination.

ASSISTANT: Betty Anderson, there are no flight services available on this route on your provided dates.

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

ASSISTANT: Thank you for contacting us.