You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I would like to book a flight from LAS, will you please help me in booking a flight?

ASSISTANT: Sure, let me know your travel dates please?

USER: Sure, my travelling dates are on Sept 28th to 30th.

ASSISTANT: May I know your connection limit?

USER: I need a single connection.

ASSISTANT: Could you please share me your destination airport code?

USER: My destination airport code is BOS.

ASSISTANT: Can I know your name please to proceed further?

USER: Sure, my name is John White.

ASSISTANT: Sorry to inform you that there are no flight services available on your given dates.

USER: No issues, thank you.

ASSISTANT: Thanks for contacting us.