You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you please change my reservation, due to an emergency?

ASSISTANT: Sure, I will help you to change your reservation. Please share me your name.

USER: Thank you. My name is Rebecca Perez.

ASSISTANT: Ok, please allow me a moment.

USER: Sure.

ASSISTANT: Sorry, no reservation found on your name to change your reservation.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you for reaching us.