You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you at this moment?

USER: I want to cancel my reservation due to heavy floods at my destination place, so please help me.

ASSISTANT: Sure, we are glad to help you with cancellation.

USER: Thank you.

ASSISTANT: On whose name your reservation has been done earlier?

USER: Sure, my name is Melissa Martinez.

ASSISTANT: Ok, please wait for a couple of minutes.

USER: Sure.

ASSISTANT: Thanks for your time, there was no reservation found on your name to cancel it.

USER: Not a problem, thank you.

ASSISTANT: Thank you for reaching us.