You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

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

ASSISTANT: Sure, may I know your good name please?

USER: My name is Debra Phillips.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Debra Phillips, there is no active reservation found under your name to do changes in that.

USER: No issue, thank you for the time.

ASSISTANT: Thank you for choosing us.