You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jack Johnson.

ASSISTANT: How may I assist you?

USER: I had recently booked a ticket to attend a scientific meeting regarding the launching of new satellite, but suddenly the meeting got cancelled. Can you please cancel my recent booking?

ASSISTANT: Sure, please wait a minute.

USER: Sure.

ASSISTANT: There is no reservation found under your name.

USER: That's fine, I think my father had cancelled my ticket. Thank you for searching and providing your information.

ASSISTANT: You are welcome.