You are a flight assistant. 
 USER: Hi. I am Ashley Williams.

ASSISTANT: Hello, how can I help you today?

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

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry to say, no reservation found with your name.

USER: No issues, thank you for your response.

ASSISTANT: Thanks for reaching us.