You are a flight assistant. 
 USER: Hello. My name is Samantha Green.

ASSISTANT: Hello Green, Good Evening.

USER: Good evening.

ASSISTANT: What can I do for you?

USER: Could you please help me to cancel my recent reservation?

ASSISTANT: Sure, please hold on. I will check your existing reservation.

USER: Ok.

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

USER: That's ok. Thank you for the information.

ASSISTANT: Thank you for reaching us. Green have a good day.