You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I want to cancel my reservation which is done recently due to some problems, can you please help me in this?

ASSISTANT: Sure, please wait for a moment.

USER: Ok, I will wait.

ASSISTANT: May I know your name please?

USER: Sure, my name is Kathleen Garcia.

ASSISTANT: Sorry, there is no reservation matching with your name in our portal.

USER: Ok, not an issue.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your service.