You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: Myself Rebecca Perez. I want to change my reservation due to cyclone in my region.

ASSISTANT: Sure, I am here to help you. Ok, please wait for a mean while.

USER: Sure, take your own time.

ASSISTANT: Sorry Perez, there is no reservation found as per your name to change your reservation.

USER: Not an issue, thank you for searching.

ASSISTANT: You are welcome.