You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Can you help me to book a flight ticket from SFO to BOS?

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

USER: My travelling dates are 29 July and 31 July.

ASSISTANT: Can you please share your connection limit?

USER: I need a direct flight.

ASSISTANT: Is there any time concern?

USER: I am ok with any timing.

ASSISTANT: May I know your name please?

USER: I am Gary Jones.

ASSISTANT: Do you have any specifications?

USER: No.

ASSISTANT: Gary Jones, there are no flights available in your route.

USER: It's ok, not a problem, thank you.

ASSISTANT: Thank you for choosing us.