You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I am Dennis Scott. I have to meet my childhood friend in Seattle, so can you please book a flight from BOS to SEA?

ASSISTANT: Sure, I am glad to help you. Can you please provide your planned dates of travelling?

USER: Thank you, my travelling dates are 01/18 and 01/20.

ASSISTANT: Please wait a moment to check the flights availability and I will revert with a best flight in your route.

USER: Sure, I will wait but make sure that the connection limit is 1.

ASSISTANT: Ok, I will search for it, please wait a moment.

USER: Ok.

ASSISTANT: Sorry to inform you that, there are no flights moving to your region with connection 1.

USER: It's ok, not a problem. Anyways thank you  for searching.

ASSISTANT: Thank you for reaching us, have a great day.

USER: You are welcome.