You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: My football match was postponed and I want to change my reservation, can you help me?

ASSISTANT: Sure, I will help you to change your reservation. May I know your name?

USER: Myself Nicole Parker.

ASSISTANT: Parker, there is no reservation found on your given name.

USER: No problem. Thank you for searching.

ASSISTANT: You are welcome. Have a nice day.