You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I serve you?

USER: The Auto-Show event has been postponed due to bad weather conditions. So, could you help me in changing the reservation with the name of Jonathan Martinez?

ASSISTANT: Sure,Please wait a second.

USER: Sure.

ASSISTANT: Sorry, No reservation found on your name.

USER: No problem.

ASSISTANT: Thank you for opting us.

USER: Thank you for your response.