You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I am Barbara Evans. My plan to visit my grand father got cancelled, could you help me in cancelling my recent reservation.

ASSISTANT: Sure, Please wait a while.

USER: Ok.

ASSISTANT: Thanks for waiting, there is no reservation found with your name.

USER: Ok, no worries. Thanks for your help.

ASSISTANT: Thanks for choosing us.