You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: I am David King. Owing an emergency, I want to cancel my recent reservation. Can you please help me?

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

USER: Ok, take your time.

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

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for reaching us.