You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you please book me a connecting flight to San Francisco?

ASSISTANT: Sure, may I know your airport codes?

USER: My travelling airport codes are from AUS to SFO.

ASSISTANT: Do you need any price limit for you?

USER: 1000 is my price limit.

ASSISTANT: When do you planned journey dates?

USER: 09/30 and 10/02 are my travelling dates.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: We are glad to inform you that there is a flight found with Delta airline of flight number 1000 and fare is 100. Shall I proceed for booking?

USER: Yes, you can.

ASSISTANT: To proceed booking, I need to know your good name?

USER: Barbara Parker is my name.

ASSISTANT: Your ticket has been booked.

USER: Thanks for booking my ticket.

ASSISTANT: Thanks for opting us and have a great day.