You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I aid you?

USER: Unfortunately my grand mother was hospitalised. So I need to change my reservation. Can you help me with that?

ASSISTANT: Sure, I will help you with that. To proceed further, May I know your good name please?

USER: I am Jessica Harris.

ASSISTANT: Ok, wait a moment.

USER: Sure.

ASSISTANT: Thank you for waiting. I have checked in reservation list to change your ticket, but could not find any reservation with your name.

USER: Ok, no Issues. Thanks for your help and support.

ASSISTANT: Thank you for choosing us, Have a great day.