You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: My scheduled examination dates has been postponed, so I would like to change my reservation. Can you help me?

ASSISTANT: Sure, can I have a your name?

USER: Myself Pamela Hall.

ASSISTANT: Sorry Hall, no reservation found on your name.

USER: That's fine. Thank you for checking.

ASSISTANT: Thank you for reaching us.