You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you now?

USER: I am Elizabeth Evans want to attend a business conference, can you help me to book a direct flight?

ASSISTANT: Sure, I will help you with that. Can you please mention the travelling dates of your journey?

USER: Sure, my travelling dates will be 03/24 and 03/26.

ASSISTANT: Ok, may I know the airport codes please?

USER: Yes, I want to fly from AUS to OAK.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Sorry Elizabeth, there is no direct flight.

USER: That's ok, thank you.

ASSISTANT: Thank you for approaching us, have a nice day.