You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am  Carol Thompson.

ASSISTANT: Ok.

USER: I want to change my reservation due to heavy storm at my source.

ASSISTANT: Ok, I will check the reservation list, to proceed further. Please wait, I will let you know.

USER: Ok.

ASSISTANT: No reservation is existed earlier to change with your details.

USER: It's ok, not an issue. Thank you.

ASSISTANT: Thanks for reaching us.