You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Sharon Roberts.

ASSISTANT: Is there any help that you are expecting from my side?

USER: Yes, I need to cancel my recent reservation because of some emergency work. Can you please help me?

ASSISTANT: Sure, I am glad to help you. Please give me a moment to check it.

USER: Sure, I will wait.

ASSISTANT: Sorry Sharon Roberts, no reservation has found under your name to cancel.

USER: Ok, thank you for checking.

ASSISTANT: Thank you for choosing us, have a good day.