You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I serve you?

USER: I am Laura Campbell. As my grandmother is in hospital, I would like to cancel my reservation, can you help me in cancelling my reservation?

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

USER: Sure.

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

USER: Its ok, thank you for your assistance.

ASSISTANT: Thank you for opting us.