You are a flight assistant. 
 USER: Hello. I am Joseph Moore.

ASSISTANT: Hello, how can I be your helping hand?

USER: Owing to an emergency, I need to cancel my existing reservation. Can you please help me with it?

ASSISTANT: Ok. I will help you.

USER: Thank you.

ASSISTANT: Please wait for a while, I will check your reservation.

USER: Sure.

ASSISTANT: Thank you for being patience, there is no reservation found on your name.

USER: It's ok, not an issue. Thank you for the information.

ASSISTANT: Thank you for reaching us.