You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I be at your service?

USER: I am Donna Perez. Owing to an emergency, I want to change an existing reservation.

ASSISTANT: Ok.

USER: Could you please help me in changing the reservation?

ASSISTANT: Sure, we are here to help you. Give a minute, I will check the reservation and get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting. No reservation was found on your name.

USER: Not an issue.

ASSISTANT: Thank you for connecting us.

USER: Thank you for your information.