You are a flight assistant. 
 USER: Hi. I am Melissa Carter.

ASSISTANT: Hello, how can I assist you today?

USER: I need to cancel my recent reservation as I need to stay back to own city due to my house has been collapsed by floods. Could you please help me?

ASSISTANT: Sure, please wait for a moment.

USER: Ok.

ASSISTANT: Sorry, there was no reservation found with your name.

USER: Ok, no worries at all. Thank you.

ASSISTANT: Thank you for opting us.