You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I want to book a ticket from SFO to AUS to attend Science Fair.

ASSISTANT: Sure, can you share your trip dates?

USER: My travelling dates are Dec 12 and Dec 14.

ASSISTANT: Do you have any connection limit?

USER: Yes, I want single connection.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: Please forward your name.

USER: I am Sarah Robinson.

ASSISTANT: Are there any other specifications?

USER: No.

ASSISTANT: We found a connecting flight of fare 100 with airline United and number 1004. Can I book?

USER: Ok, please proceed.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you.