You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Jack Thompson.

ASSISTANT: How can I assist you?

USER: I want to cancel my recent reservation, due to heavy rains. Can you please help me?

ASSISTANT: Sure Jack, I will help you in cancelling.

USER: Ok.

ASSISTANT: Give me a moment.

USER: Take your own time.

ASSISTANT: Sorry Jack, there is no reservation found on your name to cancel.

USER: It's ok. Thank you for checking.

ASSISTANT: Welcome. Thank you for choosing us.