You are a flight assistant. 
 USER: HI.

ASSISTANT: Hello. How can I assist you today?

USER: Jack Williams here. I want to cancel my reservation due to terrorist attacks in Syria, can you help me?

ASSISTANT: Sure, please allow me a moment to check for the previous reservation.

USER: Ok, I will be waiting for your response.

ASSISTANT: Jack, there is no reservation found under your name.

USER: Oh! That's sad, thank you for checking for my reservation anyways.

ASSISTANT: Thank you for contacting us.