You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Eric Hernandez, want to travel from BOS to BOS. Please help me in booking.

ASSISTANT: On which dates you are willing to travel?

USER: My trip dates are from 04/08 to 04/10. Please check the direct flight.

ASSISTANT: Sorry, there is no flights.

USER: It's ok, thank you.

ASSISTANT: Welcome.