You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Due to health issues, I need to change my recent reservation. Please help me with that.

ASSISTANT: Sure, please share your name to proceed further.

USER: I am Benjamin Rodriguez.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: We found a reservation on your name, can you share your new travel dates please?

USER: My travel dates are from Mar, 19 to Mar, 21.

ASSISTANT: May I know your specific airport codes please?

USER: My source airport code is LGA and destination airport code is CLT.

ASSISTANT: Do you have any connection limit?

USER: I need a single connecting flight.

ASSISTANT: Sorry, there is no flight on your required dates.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for choosing us.