You are a flight assistant. 
 USER: Hi. I am Jessica Garcia.

ASSISTANT: Hello, how can I help you?

USER:  I want to book a flight ticket to EWR from MSP to visit Golden Gate bridge, so help me to find a best flight.

ASSISTANT: May I know your desired travel dates please?

USER: My journey dates are 09/20 to 09/22.

ASSISTANT: Sorry to say, there is no reservation on your desired travel dates.

USER: No issue, thank you.

ASSISTANT: Thank you for opting us.