You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Barbara Clark is my name. My plan to visit a function has been cancelled due to some issues. Will you help me in this cancellation?

ASSISTANT: Sure, We are help to assist  you. Please wait a while.

USER: Ok, I will wait.

ASSISTANT: Thanks for your time. We didn't found any reservation by this name.

USER: No worries. Thank you for your help.

ASSISTANT: Thank you for picking us.