You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Mary Campbell here.

ASSISTANT: How can I help you?

USER: Can you please help me in booking a ticket from LAX to BOS?

ASSISTANT: Sure, can you please tell your travelling dates?

USER: Sure, my journey dates are 04/08 and 04/10. Please search for a direct flight.

ASSISTANT: Sorry, there are no flights available with your journey details.

USER: That's ok, thank you for your time.

ASSISTANT: Thank you and have a nice day.