You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Owing to an emergency I have request you to cancel my reservation. Can you please help me out with that?

ASSISTANT: Let me know your name.

USER: Thank you, I have reserved my ticket on the name of Sarah Rodriguez.

ASSISTANT: Sorry, no reservation found by your name. Thank you.

USER: Oh! I think the ticket was not booked properly while I am booking. Anyway, thank you for the information.