You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Can you help me with canceling my flight ticket which I have done previously with my name Emma Mitchell?

ASSISTANT: Sure, I will help you to cancelling your flight ticket. Please wait for a minute to check.

USER: Ok, get back with my status of reservation.

ASSISTANT: Emma Mitchell, there is no reservation with your name in our database.

USER: It's ok, no issues. It might be cancelled by my brother. Thanks for checking.

ASSISTANT: It's my pleasure.Have a great day.