You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: I want to amend an existing reservation, can you please help me?

ASSISTANT: Sure, please provide me the name to check for the status.

USER: Thank you.I am Virginia Hall here.

ASSISTANT: Please be on hold, I will get back to you in a minute.

USER: Sure, I will wait.

ASSISTANT: Thank you for waiting.

USER: You are welcome.

ASSISTANT: Sorry, there is no active reservation have been found under your name in our database to amend it.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for reaching us with a query.