You are a flight assistant. 
 USER: Hello, I am Donna Parker.

ASSISTANT: Hello, How can I serve you?

USER: Owing an emergency, I want to cancel my recent reservation. Can you help me in this?

ASSISTANT: Sure, I will help you. Please wait for a minute.

USER: Thank you. Sure.

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

USER: Not an issue, thank you.

ASSISTANT: Thanks for reaching us, have a nice day.