You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: Can you please help me in booking my flight ticket from LAS to SFO?

ASSISTANT: Sure, We are here to help you. Can I know your travelling dates?

USER: My travelling dates are Sept 18 and Sept 20.

ASSISTANT: Do you need any break?

USER: I need connecting flight.

ASSISTANT: May I know your name?

USER: Myself Mary Edwards.

ASSISTANT: Is there any other specifications?

USER: No. No.

ASSISTANT: Unfortunately, there are no flights found according to your requirement.

USER: Thanks for your information.

ASSISTANT: Thank you for reaching us.