You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me to cancel my recent ticket? Because I am unable to travel for the trip.

ASSISTANT: Sure, may I know your good name?

USER: Thank you. I am Barbara Collins.

ASSISTANT: Please wait for a moment.

USER: Ok, take your time.

ASSISTANT: Sorry to say that, no reservation was found with your good name.

USER: It's ok, not a problem with that. Thank you for your time.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.