You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you today?

USER: My Interview was postponed at the last minute, will you please help me to change my existing reservation as soon as possible?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Can you please share me your name?

USER: Barbara Jones here.

ASSISTANT: Please give me a moment.

USER: Ok.

ASSISTANT: There is no reservation found with your given name.

USER: Not an issue, thank you.

ASSISTANT: Thank you for approaching us.