You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I lend a hand to?

USER: My Adventure trip got postponed, Can you please change my existing reservation?

ASSISTANT: Sure, I am here to help you for this. Let me check your reservation status in our database.

USER: Sure, please check the reservation on the name of Stephanie Carter.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Sorry for inconvenience, no reservation is found with your criteria.

USER: Ok, Thank you for your service.

ASSISTANT: Thank you very much for contacting our agency.