You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Can you please help me with flight ticket booking from BOS to IAD to attend a conference meeting?

ASSISTANT: Sure, I am here to help you out. May I know your travelling dates please?

USER: Thank you and I would like to move on 15 May and I will catch the return flight on 17 May.

ASSISTANT: Can you please share your connection limit?

USER: Check the flight with a single connection.

ASSISTANT: May I know your name please?

USER: My name is Michael Lopez.

ASSISTANT: Do you have any other specification?

USER: No.

ASSISTANT: Michael Lopez, there are no flights available in your route.

USER: Sad to hear that one, thank you for your help.

ASSISTANT: Thank you for choosing us.

USER: Welcome.