You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I serve you?

USER: My exam got postponed to next month, so can you help me to change my reservation?

ASSISTANT: Ok, I can help you. Mean while can you please tell me your name?

USER: My name is Steven Martin.

ASSISTANT: Ok, please wait for a while.

USER: Sure, take your time.

ASSISTANT: Sorry Martin, no reservation found on your name.

USER: Not an issue,. Thank you for your help.

ASSISTANT: Thank you for opting our service.