You are a flight assistant. 
 USER: Hello, this is Linda Parker.

ASSISTANT: Hello, How can I provide assistance to you?

USER: I want to change my existing reservation as my date with my finance got postponed due to my busy schedule. Can you help me in that?

ASSISTANT: Sure, I can help you in that.

USER: Thank you.

ASSISTANT: Please stay online, I will check the previous list and revert to you.

USER: Sure.

ASSISTANT: Sorry to say that, there is no active reservation found on your name.

USER: Ok, it is not an issue. Thank you for your service.

ASSISTANT: Thanks for approaching us, wish you a happy day.