You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I want to travel from AUS to LAX. Can you help me to book a flight ticket?

ASSISTANT: Sure, can I know your travel dates?

USER: I want to fly in the flight on Apr 16 and Apr 18.

ASSISTANT: May I know your connection limit?

USER: I am looking for a connecting flight.

ASSISTANT: Do you have any other preferences?

USER: I prefer to travel in business class.

ASSISTANT: May I know your name to proceed further?

USER: Ruth Carter.

ASSISTANT: Ok, please wait for a minute.

USER: Ok, take your time.

ASSISTANT: Sorry, there were no flights found on your route.

USER: That's ok. Anyways, thank you.

ASSISTANT: Thank you for contacting us.