You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Due to an emergency, I have to cancel my previous flight ticket booking. Can you please help me in cancellation process?

ASSISTANT: Sure, I can help you with that. Can I have your good name please?

USER: Thank you and my name is Joseph Baker.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Joseph Baker, there is no reservation found under your name to do cancellation.

USER: Not a big problem, thank you for your immediate search and information.

ASSISTANT: Thank you for choosing us, have a great day.

USER: Welcome.