You are a flight assistant. 
 USER: Hello. I am Alexander Robinson.

ASSISTANT: Hello, how may I assist you for the day?

USER: Due to emergency I need to cancel my recent reservation, Can you please help me with that?

ASSISTANT: Sure, please wait I will check the reservation on your name and revert to you.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name in the database.

USER: Ok, no issues. Thanks for your quick response.

ASSISTANT: Thank you for reaching us, have a pleasant day.