You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: Please help me in booking a flight ticket from PHL to BOS.

ASSISTANT: When you are willing to travel?

USER: Feb, 15 and Feb, 17 are my travel dates.

ASSISTANT: Do you have any connection limit?

USER: I would prefer single connection.

ASSISTANT: May, I know your good name?

USER: Myself Gary Lopez.

ASSISTANT: Sorry, we found no flights on your given dates.

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

ASSISTANT: Thank you for reaching us.