You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your name please?

USER: Janet King here.

ASSISTANT: Ok.

USER: I am planning to visit my family, can you help me to book a flight?

ASSISTANT: How can I help you? Ok. Sure, may I know the travelling details?

USER: My airport codes are LGA and MSP. Dates are 08/28 and 08/30.

ASSISTANT: Wait for a while.

USER: Ok.

ASSISTANT: Sorry Janet, there are no flights found on your requirement. Thank you for choosing us, have a nice day.

USER: That's fine, I will go for another dates. Thank you.

ASSISTANT: You are welcome.