You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you today?

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

ASSISTANT: Sure, I will help you with that. Just give a moment.

USER: Sure, I will wait.

ASSISTANT: Can I know your name please.

USER: Sure, my name is Betty Thompson.

ASSISTANT: Sorry, no reservation is found on your name in our database.

USER: Ok, that's fine.

ASSISTANT: Thank you for reaching us.

USER: Anyways, thank you for your service.