You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Rebecca Wilson.

ASSISTANT: How can I assist you?

USER:  I am a model, I have to take part in a beauty contest at Los Angeles. Could you book me a direct flight  from Las Vegas?

ASSISTANT: May I know your travelling dates?

USER: Yes, my travelling dates are 08/11 and 08/13.

ASSISTANT: May I know your travelling airport codes?

USER: Yes, my airport codes are LAX and LAS.

ASSISTANT: Sorry, no flights found on your route.

USER: That's ok, thank you for the response.

ASSISTANT: Most welcome.