You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I would like to cancel my flight reservation as my trip got postponed, can you please help me?

ASSISTANT: Sure, I will help you with that. May I know your good name?

USER: Thank you, my name is Mary Adams.

ASSISTANT: Please wait for a while and let me search your reservation.

USER: Ok.

ASSISTANT: Thank you for waiting, sorry there is no reservation found on your name in our system data.

USER: Not an issue, thank you for the information.

ASSISTANT: Thank you for visiting us, we hope see you again.