You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Kathleen Green here. I want to cancel my previous booking due to my son's health issues, can you help me?

ASSISTANT: Sure, please allow me a moment to check for the availability of flight.

USER: Ok, take your time and let me know my previous booking status.

ASSISTANT: Kathleen, there is no reservation found under your name.

USER: Oh! That's sad, thank you for checking anyways.

ASSISTANT: You are welcome. Thank you for reaching us.