You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: My trip has been postponed due to bad weather conditions. Can you help me in changing the reservation with the name of Debra Moore?

ASSISTANT: Ok, please wait I will revert you.

USER: Sure.

ASSISTANT:  Sorry to say you that no reservation was found on your name.

USER: No problem. Thank you.

ASSISTANT:  Thank you for availing us.