You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: Myself Kathleen Wright.

ASSISTANT: Glad to meet you Wright.

USER: I want to change my existing reservation, can you help me?

ASSISTANT: Sure, I am here to help you out.

USER: Thank you.

ASSISTANT: Kathleen Wright, we found your reservation. May I know your new airport codes please?

USER: My modified travel airport codes are CLT and DTW.

ASSISTANT: May I know your preferable journey dates please?

USER: My travel dates are 06/27 and 06/29. Ensure that I need a direct flight.

ASSISTANT: Wright, there are no flights available in your route with a direct flight.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for reaching us.