You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

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

ASSISTANT: Sure, I can help you and may I know your previous booking name?

USER: Thank you, I have reserved it on the name of Jennifer Green.

ASSISTANT: Please allow me a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, I have found your reservation and it has cancelled successfully form my end.

USER: Thank you for your great support.

ASSISTANT: You are most welcome and thank you for reaching us.

USER: Welcome.