You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you help me to cancel the reservation which I had done recently?

ASSISTANT: Sure, can I know your name?

USER: Ok, please check for the name Deborah Lee.

ASSISTANT: Sorry, there is no reservation found on given name.

USER: That is ok, thank you for assisting me.

ASSISTANT: Thank you for reaching us.