You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am trying to cancel my ticket, can you please help me?

ASSISTANT: Sure, may I know your name to check the ticket status?

USER: Ok, I am Sarah Rodriguez.

ASSISTANT: Sorry Sarah, there is no reservation found with your name in our system data.

USER: It's ok, thank you for searching.

ASSISTANT: You are welcome. Thank you for reaching us.