You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Due to sudden work. so, I want to change my reservation. Can you please help me with it?

ASSISTANT: Sure, I will help you in changing the ticket. To check further please help me with your name.

USER: Thank you.

ASSISTANT: Can you please help me with the name on the ticket?

USER: Jerry Lopez here.

ASSISTANT: Jerry Lopez, regret to inform that there is no active reservation found under your name to amend.

USER: Ok, not an issue.

ASSISTANT: Thank you for reaching our agency.

USER: Thank you for your information.