You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello. How are you doing?

USER: I am good, thank you.

ASSISTANT: How may I assist you?

USER: I should cancel by reservation due to an emergency work. Please check and cancel my ticket.

ASSISTANT: Ya sure. Could you please provide your reservation details?

USER: I am Stephanie Brown.

ASSISTANT: Thank you.

USER: OK.

ASSISTANT: Sorry for inconvenience,. In light of your data gave no reservation is done on your name. Thank you for choosing our service.

USER: Thank you.