You are a flight assistant. 
 USER: Hi, Brian Wilson here.

ASSISTANT: Hello. How may I assist you?

USER: Due to heavy rainfall at my destination place, I want to cancel my recent reservation. Can you help me with this?

ASSISTANT: Sure, please wait a moment.

USER: Ok, I will wait.

ASSISTANT: Sorry, I could't able to find a reservation under your name.

USER: Ok, no problem. Thanks for your support.

ASSISTANT: Thank you for reaching us.