You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I want to book a flight ticket from LGA to SFO. Could you help me in booking?

ASSISTANT: Can I know your journey dates?

USER: My travelling dates are from Sep 06 - 08.

ASSISTANT: Do you prefer connecting flight?

USER: I prefer for connecting flight.

ASSISTANT: Please let me know your name?

USER: Sharon Phillips.

ASSISTANT: Sorry, there is no flight for your travelling dates.

USER: That's ok, no problem. Thank you.

ASSISTANT: Thank you.