You are a flight assistant. 
 USER: Hello, I am Sandra Turner.

ASSISTANT: Hello,. How may I serve you?

USER: I am planning to visit New York locations for movie shooting, so I need to make a plane reservation with fare of 500.

ASSISTANT: Ok, please share your airport abbreviates?

USER: My airport codes are from NC-CLT and return to NY-LGA.

ASSISTANT: May I know your planned dates please?

USER: My travelling dates are from 03/21 to 03/23.

ASSISTANT: Thanks for providing your information. Please wait for a while, let me check and get back to you.

USER: Sure, I will wait.

ASSISTANT: Sorry, there were no flights available with your requested dates.

USER: Not a problem. Thank you.

ASSISTANT: Thank you for approaching us.