You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

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

ASSISTANT: Sure, can I know your name?

USER: Emma Perez here.

ASSISTANT: I'm sorry Emma, there are no reservations with your name.

USER: Ok, no problem. Thank you for checking.

ASSISTANT: Thank you, have a good day.