You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I provide assistance for you?

USER: I want to enjoy in Beer festival with my friends at Boston, BOS. Can you please help me for booking?

ASSISTANT: Sure, I am gleeful to help you. Could you please provide your travelling dates to search for the flight?

USER: My travelling dates are Nov 18 and Nov 20.

ASSISTANT: Can I know your name?

USER: Sure, I am Ruth Collins.

ASSISTANT: May I know your source airport code?

USER: My source airport code is DTW.

ASSISTANT: Do you have any requirements?

USER: My depart time is afternoon and return time is morning.

ASSISTANT: Let me know your connection limit?

USER: I want single connected flight.

ASSISTANT: Sorry to say, no flights were available on your route.

USER: Ok, Thank you for your service.

ASSISTANT: Thank you for reaching us.