You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

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

ASSISTANT: Sure, may I know your name please?

USER: Sure, my name is Justin Baker.

ASSISTANT: Wait a while, kindly.

USER: Sure.

ASSISTANT:  Sorry, there is no reservation found for the user name in our back end to cancel it.

USER: Ok, not an issue. Anyways, thank you for your service.

ASSISTANT: Thank you for reaching us.