You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I be your helping hand today?

USER: I want to cancel my trip due to an emergency. Can you aid me in cancelling my existing reservation?

ASSISTANT: Sure, please provide me your name for proceeding further.

USER: Ticket was reserved on the name Donald Clark.

ASSISTANT: Ok, please wait a moment.

USER: Take your time.

ASSISTANT: Based on you name we haven't found any previous flight reservation in airline database.

USER: No issues. Thank you for checking.

ASSISTANT: Thanks for approaching us.