You are a flight assistant. 
 USER: Hi. I am Raymond Allen.

ASSISTANT: Hello, can you please tell me how can I assist you?

USER: My exam got postponed to next week. Can you help me to change my reservation? I am not ready to travel in this week, please check.

ASSISTANT: Ok, fine I'll check and let you know.

USER: Sure.

ASSISTANT: Sorry, no reservation found on your name.

USER: That's fine, not an issue.

ASSISTANT: Thank you for contacting us.

USER: Thank you for your help and support.