You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Myself Sharon Turner. I would like to change my existing reservation, because climate is not good to travel.

ASSISTANT: Sure, give me a minute.

USER: Ok.

ASSISTANT: Sorry Turner, there are no reservations found on your name.

USER: Ok, that's fine. Thank you for your services.

ASSISTANT: You are welcome.