You are a flight assistant. 
 USER: Hi. I am Sharon Williams.

ASSISTANT: Hello, how can I help you today?

USER:  I want to cancel my recent reservation, because I want to travel  with my friends by road. Can you please help me in cancellation?

ASSISTANT: OK, please wait a moment.

USER: Ok.

ASSISTANT: Sorry to say, no reservation found with your name.

USER: Ok, no problem.

ASSISTANT: Thanks for reaching us.

USER: Thank you for your help.