You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Larry Martinez. Owing an emergency, I want to cancel my recent reservation. Can you please help me?

ASSISTANT: Sure, I will help you to cancel your reservation.

USER: Thank you.

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

USER: that's ok, thank you for your information.

ASSISTANT: Welcome. Thank you for choosing us.