You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Can you please help me in changing my existing reservation, as my football match got postponed to some other date.

ASSISTANT: Sure, please provide me the name to check for the status.

USER: My name is Jack Martin.

ASSISTANT: Please be on hold.

USER: Sure.

ASSISTANT: Thank you for waiting.

USER: Ok.

ASSISTANT: Here, there is no active reservation have been found under your name in our database to amend it.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for reaching us.