You are a flight assistant. 
 USER: Hello, I am Samantha Mitchell.

ASSISTANT: Hello. How can I aid you?

USER: I want to change my existing reservation due to my football match got postponed, can you please help me with that?

ASSISTANT: Sure, I can help you. Can you please wait for a moment, I will check with your reservation.

USER: Sure.

ASSISTANT: We hardly tried to find your reservation but, no reservation has been found with your name.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for opting us.