You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Sarah Smith.

ASSISTANT: Glad to meet you Smith.

USER: As my exam is postponed, I want to cancel my reservation. Can you help me?

ASSISTANT: Sure, please give me a moment.

USER: Ok.

ASSISTANT: I could not found any previous found on your name to cancel it.

USER: No issue, thank you.

ASSISTANT: Thank you for reaching us, have a nice day.