You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: My name is Shirley Turner. Actually, I booked a ticket to ORD for a carnival but due to bad weather, the trip is postponed. Could you help me with changing the reservation?

ASSISTANT: Yes Shirley, please hold on for a moment so that I check the status of your existing reservation.

USER: Sure, take your time.

ASSISTANT: Sorry, I could not find any ticket booked with your name.

USER: That's ok. Thank you for your time.

ASSISTANT: Thank you, have a nice day.