You are a flight assistant. 
 USER: Hello. I am Dorothy Adams.

ASSISTANT: Hello, how can I help you?

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

ASSISTANT: Please wait a while.

USER: Ok, take your own time.

ASSISTANT: Sorry to say, there is no reservation on your name in our database.

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

ASSISTANT: Thank you for opting us.