You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Debra Turner.

ASSISTANT: How may I aid you?

USER: I want to change an existing reservation due to the match was cancelled. Can you help me out?

ASSISTANT: Ok, please wait I will let you know.

USER: Ok.

ASSISTANT: Sorry, no reservation found on your name.

USER: Not an issue. Thank you for your help.