You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for today?

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

ASSISTANT: Ok, may I know your name to check your previous booking status?

USER: My name is Elizabeth Rodriguez.

ASSISTANT: Can you please wait for a moment till I check with availability?

USER: Sure.

ASSISTANT: Elizabeth Rodriguez, I am very apologetic to tell you, there is no reservation available by your name.

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

ASSISTANT: Thank you for choosing our consultancy. Have a nice day.