You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am Christine Roberts. I want to cancel my recent reservation because suddenly my trip got cancelled. Please help me out with that.

ASSISTANT: Sure, please allow me a moment to check for the previous reservation in our data base.

USER: Ok, take your time.

ASSISTANT: I appreciate your patience. Christine, there is no reservation found under your name.

USER: It's ok, no issue. Thank you for your help.

ASSISTANT: Thank you for reaching us.