You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: My scheduled examination dates has been postponed, could you please help me with changing my recent reservation?

ASSISTANT: Sure, may I know your name?

USER: My reservation was done under the name Barbara Smith.

ASSISTANT: Give me a minute.

USER: Sure, take your time.

ASSISTANT: Sorry, there is no reservation found under your name.

USER: That's ok, not an issue.

ASSISTANT: Thank you for availing us.

USER: Anyways, thank you for the information.