You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Donald Moore.

ASSISTANT: How can I aid you?

USER: Owing to an emergency, I want to cancel my recent reservation. Can you help me in that?

ASSISTANT: Sure, I am here to help you. Please wait a minute.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no active reservation on your name in our records.

USER: Ok, no problem. Thank you for checking.

ASSISTANT: Thank you for reaching us.