You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I have to cancel the ticket which is booked to travel to Houston but now I have decided to cancel it. Can you please help me?

ASSISTANT: Sure, please wait for a minute. May I know your name to proceed further?

USER: Yes, my name is Dorothy Clark.

ASSISTANT: Sorry, I could not find any reservation with your name in our database.

USER: It's ok, not an issue with that. Thank you for searching the ticket status.

ASSISTANT: My pleasure.