You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Michelle Hernandez here.

ASSISTANT: Nice to meet you.

USER: I want to attend a seminar in Charlotte. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, I will help you with that. Could you please provide your source code and destination code for booking?

USER: My airport codes are from LGA to CLT.

ASSISTANT: Michelle Hernandez, may I know your planned travel dates please?

USER: My travelling dates are from 03/14 to 03/16.

ASSISTANT: Sorry to say, there is no flight as per your travel dates.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for approaching us, have a great day.