You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I want to cancel my recent reservation, can you please help me?

ASSISTANT: Sure, I will help you out. Please give a moment. May I know your name please?

USER: I am Melissa Baker.

ASSISTANT: Sorry, there are no reservations found.

USER: Ok, no problem. Thank you for your time.

ASSISTANT: Thank you for choosing us.