You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I  help you?

USER: I am Sharon Mitchell. Can you please help me in booking my flight ticket from LAX to EWR?

ASSISTANT: Your travelling dates please?

USER: My travelling dates are Jan 14 and Jan 16.

ASSISTANT: I am sorry no flight on your route.

USER: Ok, fine thank you for checking.

ASSISTANT: Thank you for choosing us.