You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Sandra Edwards. I would like to go to shopping in Ferry building market place at San Francisco, which is famous for summer wear. Can you please book me a flight ticket with a connection?

ASSISTANT: Sure, please share me your travelling dates?

USER: I have planned to go on 06/11 and I will come back on 06/13.

ASSISTANT: Kindly mention me your airport codes?

USER: I am travelling from AUS to SFO.

ASSISTANT: Thanks for your details. SOrry there are no flights with your specifications.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us.