You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you today?

USER: I am Robert Robinson. I have an emergency meeting with my client, can you cancel my reservation?

ASSISTANT: Sure, wait for some time I will check and revert you.

USER: OK.

ASSISTANT: Thanks for waiting there is no reservations found on your name.

USER: Ok, not at all a problem. Thanks for your valuable time spending with me.

ASSISTANT: Thanks for choosing us.