You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I need to change my reservation which I have done to participate in dance event but unfortunately dance event got postponed to next month so can you please change my reservation?

ASSISTANT: Sure, I will help you with that.

USER: Thanks.

ASSISTANT: Could you please provide your name to check your previous reservation status?

USER: Sure, my name is Sarah Davis.

ASSISTANT: Ok Sarah, please be on hold to check.

USER: Ok.

ASSISTANT: We regret that, there is no reservation found with your name in our records.

USER: Oh! it's ok no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us, have a great day.