You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Can you help me to cancel my reservation?

ASSISTANT: Sure, let me know your name to check your reservation details.

USER: I am John Rodriguez.

ASSISTANT: Thank you. Please wait for a while, let me check your reservation status.

USER: Ok.

ASSISTANT: I am very sorry to inform you that there is no reservation found under your name in our database.

USER: It's ok, not a problem. Thank you.

ASSISTANT: Thank you for reaching us.