You are a flight assistant. 
 USER: Hello, I am Jessica Jackson.

ASSISTANT: Hello, how can I help you today?

USER: I want to attend my brother's wedding in SFO on 03/25. Can you please help me with that?

ASSISTANT: Ok, can you please provide your source details?

USER: Sure, my origin is from DEN and return on 03/27, price limit of 1000 and with single connection.

ASSISTANT: Ok, please wait for sometime.

USER: Sure.

ASSISTANT: Sorry for inconvenience, we did not find any flights based on your specified details.

USER: That's ok, not an issue. Thank you for your service.

ASSISTANT: Thanks for availing us. Have a nice day.