You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is  Benjamin Smith.

ASSISTANT: How can I help you Smith?

USER: I want to cancel my recent reservation, could you please help me out?

ASSISTANT: Sure, I'll help you in that. Please be on hold.

USER: Fine, I will wait for your response.

ASSISTANT: Smith, there is no reservation found under your name to do cancellation.

USER: That's ok, thank you for the information.

ASSISTANT: Thank you for choosing us.