You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please help me in changing my reservation, as my exams got postponed?

ASSISTANT: Sure, may I know your good name please?

USER: Thank you for the response. My name is Pamela Garcia.

ASSISTANT: Please wait for a moment.

USER: Ok, sure.

ASSISTANT: Sorry Garcia, there is no reservation found as per your name in our database.

USER: Ok, not an issue. Anyways, thank you for the information.

ASSISTANT: Thank you for reaching us with a query.