You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I provide assistance for you at this moment?

USER: Due to an emergency, I want to cancel my reservation. Can you help me?

ASSISTANT: Sure, I am here to aid you. May I know you good name for checking your recent reservation status?

USER: David Perez here.

ASSISTANT: Ok, please wait for some time.

USER: Sure.

ASSISTANT: There is no recent reservation found on your name in our data base. Thank you for availing us.

USER: No problem, I will check with another airline.