You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I have planned to go near to my family members but I have an important meeting in my work place. Can you please cancel my recent reservation?

ASSISTANT: Sure, I am here to help you with that. Can you please provide me the name on which reservation has done?

USER: Sure, my name is Helen Nelson.

ASSISTANT: Ok, please wait a moment.

USER: Sure, I will wait for your response.

ASSISTANT: Thank you for waiting. Sorry Helen, there is no reservation found under your name.

USER: That's fine, not an issue. Thank you for checking.

ASSISTANT: My pleasure. Thank you for choosing us.