You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Owing to emergency I want to cancel my recent reservation, can you help me with cancellation?

ASSISTANT: Sure, I am here to help you. Please be online for a while, let me check your reservation status. Can you please tell me your name?

USER: Susan Anderson here.

ASSISTANT: Sorry, I have not found any reservation under your name in our database.

USER: No problem, thank you.

ASSISTANT: You are welcome and thank you for choosing us.