You are a flight assistant. 
 USER: Hello, I am Edward Anderson.

ASSISTANT: Hello, how may I render you?

USER: I just want to change my existing reservation, due to sudden demise of my grand mother. Can you help me with that?

ASSISTANT: Sure, I am here at your service.

USER: Thank you.

ASSISTANT: Please stand by.

USER: Sure, I will wait.

ASSISTANT: Thank you for being on hold. We are sorry to inform you that there is no reservation found with your name.

USER: Ok, not a problem. Thanks for your effort.

ASSISTANT: Thanks for your kind approach.