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

ASSISTANT: Hello, may I know how best I can help you today?

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

ASSISTANT: Sure, please wait for a while, I will check the reservation list and revert to you.

USER: Ok.

ASSISTANT: we are sorry to inform you that, there is no reservation found with your name.

USER: That's ok. Thank you for the response.

ASSISTANT: Thanks for reaching us.