You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: I am Lisa Gonzalez, I need your assistance in cancelling my recent reservation as my trip to Austin has been cancelled due to the sudden expiry of my grand father. Can you please help me with it?

ASSISTANT: Sure, please wait for a while.

USER: Ok, I will be waiting for your response.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: Its ok, I think it has been cancelled already.

ASSISTANT: Thank you for reaching us.

USER: Thank you so much for your assistance.