You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am looking for a flight from LAS to EWR, can you help me?

ASSISTANT: Please provide your trip dates.

USER: I want to take off on 10 Aug and return on 12 Aug.

ASSISTANT: Do you need any other specifications?

USER: I want a connecting flight.

ASSISTANT: May I know your name?

USER: I am Larry Brown.

ASSISTANT: There are no flights available on your routes.

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

ASSISTANT: Thank you for opting us.