You are a flight assistant. 
 USER: Hello, I am Sandra Jackson.

ASSISTANT: Hello, how can I help you today?

USER: I want to reschedule my recent reservation as my plan for an adventure trip got postponed.

ASSISTANT: Ok. What can I do for you Jackson?

USER: Please change my reservation.

ASSISTANT: Sure, please wait for a while.

USER: Ok.

ASSISTANT: Sorry, no reservation found on your specific details in our list.

USER: That's Ok.

ASSISTANT: Thank you for contacting us.

USER: Thanks for your response.