You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you today?

USER: Actually, I had reserved a flight ticket to reach Houston on my son name to participate in a dance event, but the program got cancelled on that date, can you please cancel that ticket?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Could you please provide your son name to check the reservation status?

USER: My son name is Kathleen Thomas.

ASSISTANT: Please hold on a moment to check.

USER: Sure.

ASSISTANT: We regret that, there is no reservation found with your son name in our records.

USER: Oh! Ok.

ASSISTANT: Thank you for approaching us, have a great day.

USER: Thank you for your good service.

ASSISTANT: Welcome.