You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: My name is  Christine Lopez. I need your help in cancelling my recent reservation. Can you help me with that?

ASSISTANT: Sure, i will help you with that. Please wait a minute.

USER: Sure.

ASSISTANT: Sorry Lopez, there is no reservation under your name.

USER: OK, thank you for checking. Have a great day.

ASSISTANT: Welcome and Thank you for reaching us.