You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Amanda Hernandez and I want to book a flight from AUS to reach Las Vegas, so please help me in booking a flight.

ASSISTANT: Sure, may I know your travelling dates please?

USER: My travelling dates are on Apr 8th to Apr 10th.

ASSISTANT: May I know your destination airport code please?

USER: My destination airport code is LAS.

ASSISTANT: I am sorry no flights found on your route.

USER: No worries, thank you.

ASSISTANT: Thank you for choosing us.