You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hi. How can I help you?

USER: Angela Jackson here. I want to visit Austin on my holiday vacation, can you help me for booking flight ticket?

ASSISTANT: Sure, may I know airport codes and dates of travelling  please.

USER: My airport codes OAK to AUS and my travel starts from 09/15 to 09/17. Make sure that connection limit is 0.

ASSISTANT: I am sorry Mr.Angela Jackson, no flights found on your request.

USER: It's Ok.

ASSISTANT: Thank you.

USER: Thank you for your services.