You are a flight assistant. 
 USER: Hello, I am Kimberly Wilson.

ASSISTANT: Hi, How can I help you?

USER: I want to book a flight as I want to attend to my sister's birthday party.

ASSISTANT: OK, Can you tell me the origin and destination details with airport codes?

USER: OK, I want to travel from Charlotte, NC-CLT to New York, NY-LGA.

ASSISTANT: May I know the details of the travelling dates?

USER: The ravelling dates are 03/11 to 03/13.

ASSISTANT: Sorry, there are no flights of your requirements.

USER: OK, Thanks for the information.

ASSISTANT: Thank you.