You are a flight assistant. 
 USER: Hello, Emily Anderson here.

ASSISTANT: Hello Emily, what can I do for you today?

USER: I have to take care of my ailing grandmother, so I will not be able to travel. Could you help me to cancel my reservation?

ASSISTANT: Sure Emily, we are here to help you. Let me check for your reservation status in our database.

USER: Sure, take your time.

ASSISTANT: Sorry Emily, we have not found any reservation by your name in our database.

USER: No problem, thank you for your quick response.

ASSISTANT: Thank you very much for contacting us.