You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Angela Baker. Due to postponement of my visa, I have to cancel my trip. Will you aid me in cancellation of my reservation?

ASSISTANT: Sure, please wait.

USER: Thank you.

ASSISTANT: There is no reservation found on your name.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you.