You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you?

USER: I am Deborah Evans, I want to change my reservation as my plan to meet my cousin is postponed due to bad health. Can you help me with that?

ASSISTANT: Sure, I will help you. Please wait for a while. I will check the reservation list and let you know.

USER: Sure.

ASSISTANT: Thanks for your precious time. Sorry to inform you that there was no reservation found on your name.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for approaching us.