You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I serve you?

USER: Can you please help me to change my reservation as my exams was postponed?

ASSISTANT: Sure, may I know your name?

USER: Myself Deborah Adams.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry to say, no reservation found with your name.

USER: Ok, no problem. Thank you so much.

ASSISTANT: Thanks for reaching us.