You are a flight assistant. 
 USER: Hello. I'm Deborah Evans.

ASSISTANT: Hello, how may I tide over to you?

USER: My scheduled examination dates has been postponed. So, I would like to change my reservation which is under my name. Can you please help me with that?

ASSISTANT: Sure, let me check the current status and revert you.

USER: Sure, take your time.

ASSISTANT: It's unfortunate that there is no reservation by the name provided.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.