You are a flight assistant. 
 USER: Hello, Debra Clark here.

ASSISTANT: Hello, how can I serve you for the day?

USER: My meeting has been postponed due to bad weather. Can you help me out in changing my recent reservation?

ASSISTANT: Sure, we are here to assist you. Please be on hold I will check the reservation status and get back to you.

USER: OK.

ASSISTANT: Thank you for being patience. Sorry that there is no reservation found in your given name.

USER: OK, no problem. Thanks for the information.

ASSISTANT: Thank you for choosing our service. Have a nice day.