You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: My name is Daniel Taylor. I want to attend a seminar in Oakland.Can you please help me in booking a flight ticket?

ASSISTANT: Can you provide me your airport codes and travel dates?

USER: My airport codes are from NV-LAS to CA-OAK. My departure date is 02/16 and return date is 02/18. Make sure my price limit is 1000 and the connections limit is 0.

ASSISTANT: Sorry Daniel, I did not find any flight basing on your details.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for reaching us.