You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I be of your help?

USER: I want to cancel my recent reservation due to some family problems. Can you help me?

ASSISTANT: Sure, give me sometime.

USER: Ok.

ASSISTANT: Thank you for waiting. May I know your good name please?

USER: Yes, I am Samantha Lewis.

ASSISTANT: Ok, Unfortunately there is no reservation found according to your name.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for being with us.