You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: I want to book a flight ticket from OAK to BOS, can you help me with booking please?

ASSISTANT: Sure, could you please share me with your dates of journey?

USER: Yes, my travelling dates are Oct 27 and Oct 29.

ASSISTANT: May I know your good name please?

USER: My name is Christopher White.

ASSISTANT: Do you have any other specifications please?

USER: I need a direct flight.

ASSISTANT: Sorry White, there is no flight found as per your travelling details.

USER: That's fine, thank you for the response.

ASSISTANT: You are welcome.