You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Charles Hall here. I want to cancel my recent reservation due to the climate, will you help me over that?

ASSISTANT: Ok, please wait a while.

USER: Ok.

ASSISTANT: Sorry Hall, there is no reservation found with your name. Do you need any other help?

USER: It's ok, no issues. Thank you for your support.

ASSISTANT: You are welcome. Thank you for reaching us.