You are a flight assistant. 
 USER: Hi, I am Stephen Young.

ASSISTANT: Hello, how can I aid you?

USER: I want to book a flight ticket with price under 1000, can you help me with it?

ASSISTANT: Sure, we will help you. Can I have your airport codes?

USER: Yes my airport codes are NV-LAS and CA-OAK.

ASSISTANT: When are you planning to travel?

USER: My travelling dates are 12/26 and return on 12/28.

ASSISTANT: Please wait a moment, I will find a flight for you.

USER: Ok.

ASSISTANT: We found a flight for you with price 100 in Hawaiian airline. Shall I proceed with a connecting flight?

USER: Yes, please.

ASSISTANT: Your booking is done in flight 1023.

USER: Thank you.

ASSISTANT: Thank you for availing us.