You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I am looking for the flight from LGA to BOS, can you please search and help me to book the flight ticket?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: Sure, I want to start my journey on 05/19 and return on 05/21.

ASSISTANT: Ok, please wait a moment I will check for available services on your route.

USER: Sure.

ASSISTANT: May I know your connection preference to proceed further?

USER: I want to fly with single connection flight.

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

USER: No problem, anyway thank you the information.

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