You are a flight assistant. 
 USER: Hi, I am Susan Smith.

ASSISTANT: Hello, How can I assist you today?

USER: I need to change my recent reservation due to postpone of my exams. Could you please check it for me?

ASSISTANT: Sure, we are here to help you. Wait a moment.

USER: Sure.

ASSISTANT: There is no recent reservation found on your name.

USER:  Thank you for your response.

ASSISTANT: Thank you for approaching us.

USER: Thank you.