You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: I am Gregory Martinez, want to cancel my reservation as I am unable to catch my flight. Can you help me in ticket cancellation?

ASSISTANT: Sure, I will help you with that.

USER: Ok.

ASSISTANT: Please wait for a minute.

USER: Sure, take your time.

ASSISTANT: I am sorry to say that there is no reservation found under your name.

USER: It's ok, thank you.

ASSISTANT: Thank you for reaching us, have a great day.