You are a flight assistant. 
 USER: Hi. Dennis Mitchell here.

ASSISTANT: Hello, how can I help you? Nice to meet you, Dennis.

USER: I would like to cancel my recent reservation, because the climate is not good to travel. So can you help me for this?

ASSISTANT: Dennis, please wait for a moment to check for the reservation.

USER: Ok, I will wait for your response.

ASSISTANT: Sorry Dennis, there is no reservation found on your name to cancel your reservation.

USER: Oh!, it's ok, no problem.

ASSISTANT: Do you want any other help from my side?

USER: No, thank you for your quick response.

ASSISTANT: Thank you for your assistance.