You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you today?

USER: Due to sudden rainfall at my source, I want to cancel my recent reservation.

ASSISTANT: Ok.

USER: Can you please help me with this?

ASSISTANT: Sure, I am here to help you. May I know your name to check the reservation?

USER: Sure, I am John Clark.

ASSISTANT: Please, wait for a moment.

USER: Sure.

ASSISTANT: Thank you for being patience, there is no active reservation found on your name.

USER: Ok. Thank you for your service.

ASSISTANT: Thank you for contacting us.