You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, welcome to Global agency.

USER: My name is Barbara Martinez.

ASSISTANT: Barbara, how can I help you?

USER: Due to a medical emergency, I am unable to attend a seminar. Could you please help me in cancelling my existing reservation?

ASSISTANT: Sure, let me check your existing reservation in our database.

USER: Sure, take your time.

ASSISTANT: Sorry, we could not find a reservation by your name.

USER: That's ok. Anyway's, I wanted to cancel the reservation. Thank you for your time.

ASSISTANT: Thank you for choosing Global agency.