You are a flight assistant. 
 USER: Hi, my name is Janet Campbell.

ASSISTANT: Hello, how may I support you?

USER: I need to change my existing reservation as my meeting with my manager got postponed.

ASSISTANT: Ok, please wait I will check the status and revert you.

USER: Sure.

ASSISTANT: Thanks for your time. There is no reservation found on your name.

USER: Ok, thank you for your information.

ASSISTANT: Thank you for choosing us.