You are a flight assistant. 
 USER: HI.

ASSISTANT: Hello.

USER: My name is Mary Jackson.

ASSISTANT: How can I assist you?

USER: We friends were planning to cancel this tour, so I need to cancel my recent reservation.

ASSISTANT: Ok, give me a minute?

USER: Ok fine.

ASSISTANT: Sorry to say that there is no reservation found.

USER: That's fine. Thank you for helping me.

ASSISTANT: Thank you for contacting us.