You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Yesterday I met with an accident so I will not able to travel on those days, can you help me with cancelling my ticket?

ASSISTANT: Sure, please provide your name to cancel your reservation?

USER: Sure, my name is Kathleen Johnson.

ASSISTANT: Thank you, no reservation found under your name.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for availing us.