You are a flight assistant. 
 USER: Hello, Richard Jones here.

ASSISTANT: Hello,. How can I serve you?

USER: Owing to an emergency I have request you to cancel my recent reservation. Could you please help me out in that?

ASSISTANT: Sure, please wait a moment.

USER: OK.

ASSISTANT: Thanks for waiting, sorry to say that no flight is found regarding your information. No reservation is found.

USER: OK, thank you for the information.

ASSISTANT: Thank you, for connecting with us.