You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Sharon Wilson.

ASSISTANT: How can I help you Wilson?

USER: Due to postponement of the cricket final match.

ASSISTANT: Ok.

USER: I am planning to change my reservation. Can you help me?

ASSISTANT: Sure. Please wait. Sorry Wilson, no reservation found by your name.

USER: It's fine. Thank you for your help.

ASSISTANT: Welcome.