You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How shall I support you now?

USER: I need to cancel my reservation as my exams got postponed, can you please help me out?

ASSISTANT: Sure. To cancel the reservation, may I have your name?

USER: I am Margaret Lewis.

ASSISTANT: Thanks for your name.

USER: Ok.

ASSISTANT: No reservation was found on your name.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you.