You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I am Kathleen Carter. My exam got postponed to next week, can you help me to change my reservation? Please check.

ASSISTANT: Sure, wait a moment please.

USER: Sure.

ASSISTANT: Sorry Kathleen Carter, there is no reservation found with your name. Anything else I may assist you?

USER: Oh! that's fine. No.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your quick response.

ASSISTANT: Have a great day.