You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER:  I am Sandra Gonzalez want to travel to CA-SFO to attend a press conference. Can you book a ticket from NV-LAS?

ASSISTANT: Sure, Please help me with your travel dates.

USER: My travel dates are 07/04 and 07/06.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Ok, no issues. Thank you for availing me.

ASSISTANT: Thank you for opting us.