You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I need to change my travel dates in the previous ticket because the event which is planned was postponed. Can you please help me in changing the details?

ASSISTANT: Sure, I will help you. May I know your name please to check your reservation status?

USER: Thank you for accepting my request. My name is Richard Edwards.

ASSISTANT: Please wait a moment, Richard.

USER: Sure, I will wait for your response.

ASSISTANT: Richard, no reservation has been found on your name in our records.

USER: It's ok, not a problem with that one. Thank you for searching my previous reservation status.

ASSISTANT: Thank you for choosing our agency.

USER: You are welcome.