You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: Due to heavy rain, I want to cancel my reservation. Can you help me?

ASSISTANT: Sure, I'll try to cancel your ticket. Could you please let me know your name to check the reservation status?

USER: David Hall here.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, we didn't found any reservation by your name.

USER: No issue, Thanks for the information.

ASSISTANT: Thank you for availing us.