You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I need to cancel my reservation due to bad weather condition. Can you assist me?

ASSISTANT: Sure, I'll help you with this. Can I have your name please to check the reservation list?

USER: Donald Clark.

ASSISTANT: Ok, please wait a minute I will get back to you with the present status.

USER: Sure.

ASSISTANT: Thank you for waiting, we found a reservation by this name. Shall I cancel the ticket?

USER: Proceed.

ASSISTANT: Your ticket has been cancelled successfully.

USER: Thank you for helping me.

ASSISTANT: It's pleasure to serve you.