You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I best support you now?

USER: I need to change my reservation due to postponed of my interview. Can you please change my reservation?

ASSISTANT: Sure, please share me your good name?

USER: Samantha Garcia is my name.

ASSISTANT: Just wait for sometime.

USER: Sure.

ASSISTANT: Unfortunately, there is no active reservation found on your name.

USER: Ok, no issues.

ASSISTANT: Thanks for contacting our service.

USER: Thanks for your information.

ASSISTANT: Have a great day.