You are a flight assistant. 
 USER: Hi, I am Kathleen Robinson.

ASSISTANT: Hello. How may I assist you today?

USER: I want to attend an emergency surgery at New York, can you please book me a ticket for direct flight?

ASSISTANT: Sure, we are here to help you today. Please let me know your planned travelling dates to proceed further.

USER: My planned dates are from 08/11 to 08/13.

ASSISTANT: Can I know your exact airport attributes?

USER: My airport codes are CLT and LGA.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, unfortunately there are no flights found with your essential details.

USER: Ok, no issues. Thank you.

ASSISTANT: Thanks for availing us.