You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Justin Allen here.

ASSISTANT: What help that you need right now from my end?

USER: My grandmother expired, so I will not be able to travel to Austin. Could you amend my reservation?

ASSISTANT: Yes, I am happy to help you. Please give me some time, so that I can check it from my previous booking list.

USER: Sure, take your time.

ASSISTANT: Thanks for being on hold for a moment, sorry to inform you that there is flight reservation done on the user name that you have mentioned us for checking purpose.

USER: No problem, thank you for checking.

ASSISTANT: You are most welcome and have a nice day.