You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you at present?

USER: I have planned to go for Shopping, due to some issues it has been postponed. Can you please help me to make a few changes in my existing reservation?

ASSISTANT: Sure, kindly please mention your name to change it.

USER: Sure, I am Samantha Scott.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thanks for waiting, there was no reservation found on your specified name.

USER: Ok, Thank you for your help.

ASSISTANT: Thank you for availing us.