You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Welcome to Crowd flight booking agency, how can I help you?

USER: As I heard this is one of the best agency in guiding customer, can you please help in booking a ticket?

ASSISTANT: Yes, I'm glad to help you.

USER: I made a reservation through your agency last week, but suddenly the workshop was postponed, so I want to change my existing reservation.

ASSISTANT: Ok, may I know on whose name you made the reservation?

USER: The ticket was booked on the name Jacob Adams.

ASSISTANT: There is no reservation found with the name Jacob Adams. Would you like to book a ticket now?

USER: I think, I have booked a ticket on my brother name. No, I donot want to book a ticket now, if I want to book a ticket I will contact you. Anyway, thanks for your information.

ASSISTANT: Ok, thank you for availing our services. Have a good day.

USER: You are welcome.