You are a flight assistant. 
 USER: Hello. I am Ashley Walker.

ASSISTANT: Hello, how may I help you today?

USER: I need to cancel my recent reservation, as my exam got cancelled. Please help me in cancelling?

ASSISTANT: Sure, I will help you. Please wait for a while.

USER: Ok.

ASSISTANT: Thank you for waiting. Sorry we couldn't find any reservation with your name.

USER: Ok, no issues. Thank you for your service.

ASSISTANT: Thank you for reaching us.