You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: Can you please change my recent reservation which I was reserved in the month of September?

ASSISTANT: Ok, please let me know your name.

USER: Myself Amy Campbell.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Sorry Amy, no active reservation found under your name.

USER: Thank you for checking.

ASSISTANT: Thank you for reaching us.