You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, Good Evening.

USER: Good Evening.

ASSISTANT: How can I assist you for today?

USER: Actually I booked a flight ticket in the month of April, but now I am unable to take flight in that month due a medical emergency, can you please check if there is any possibility to cancel my reservation?

ASSISTANT: Ok, may I know on which name the ticket was booked?

USER: The ticket was booked with my name which is Robert Evans.

ASSISTANT: Ok Robert, please hold on for a moment.

USER: Ok, take your time.

ASSISTANT: Sorry, there is no existing reservation with your name.

USER: No problem as I already wanted to cancel my reservation.

ASSISTANT: Thank you, have a good day.

USER: Thank you for your time.