You are a flight assistant. 
 USER: Hello,. Myself Emma Thomas.

ASSISTANT: Hello, how can I help you?

USER: I want to book a flight ticket to attend International Auto Show in Charlotte, they are exhibiting more than 400 vehicles from many branded companies. Can you please book a flight ticket from Philadelphia, PA - PHL?

ASSISTANT: Sure, can I have your dates of journey please?

USER: My departure date is on 02/22 and arrival date is on 02/24.

ASSISTANT: Please provide your destination airport code?

USER: My landing airport code is NC - CLT.

ASSISTANT: Do you have any price limit?

USER: Yes, my price limit is 200.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, no flights found on your given price limit.

USER: It's ok, not an issue.

ASSISTANT: Thank you for choosing us.

USER: Thank you for your information.