You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you at this moment?

USER: I want to change my existing reservation, due to sudden demise of my grandfather. Can you please help me with this?

ASSISTANT: Sure, I will help you with this. Can you please provide your name to check your reservation status?

USER: Sure, my name is Jacob Brown.

ASSISTANT: Jacob Brown, there is no active reservation found under your name in our database.

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

ASSISTANT: Thank you for contacting us.