You are a flight assistant. 
 USER: Hello, myself Joshua Scott.

ASSISTANT: Hello, how may I assist you?

USER: I would like to meet my sister at Las Vegas, please help me in booking a ticket from MSP to LAS.

ASSISTANT: Ok, may I know your planned trip dates?

USER: My trip dates are 07/14 and 07/16.

ASSISTANT: There are no flights available for you.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for contacting us.