You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How exactly I can serve you the best today?

USER: Actually, I want to cancel my reservation which is done recently due to heavy floods at Denver, can you please help me?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: On whose name, the reservation has been made earlier?

USER: Sure, my name is Mary Edwards.

ASSISTANT: Please wait for a while.

USER: Sure, I will wait.

ASSISTANT: Thanks for your time, we found a reservation on your name and it has been cancelled.

USER: Thank you for your appreciable service.

ASSISTANT: Thank you for availing us.