You are a flight assistant. 
 USER: Hi, I am Cynthia Collins.

ASSISTANT: Hello, how may I be at your service?

USER: Can you book a direct flight to SEA?

ASSISTANT: Sure, let me have your price limit?

USER: I have to attend a business meeting on 05/26. With in a price limit of 5000.

ASSISTANT: Could me please mention your source code?

USER: I have to start from AUS.

ASSISTANT: May I know your return date?

USER: I will return on 05/28.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: There is an UA airline of price 300 and the connection limit is one with flight number 1022.

USER: But I have mentioned about direct flight, please check with direct flight.

ASSISTANT: Sorry, no direct flights available to you.

USER: Ok, thanks for your service.

ASSISTANT: Thanks for opting us.