You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: I just wants to cancel my reservation, as my visa got rejected with the name of Jacob Green.

ASSISTANT: Ok, I will help you with that. Please, wait a minute.

USER: Thank you.

ASSISTANT: Thank you for being patience.

USER: It's ok.

ASSISTANT: I did not find any reservation on your name to proceed for cancellation.

USER: Thank you for your assistance.

ASSISTANT: Thank you for contacting us.