You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I need to modify my travel details in the past ticket which is booked recently because the planned trip got postponed. Can you please guide me in changing the details?

ASSISTANT: Sure, can I know your name please?

USER: Thank you for considering my request. My name is Margaret Rodriguez.

ASSISTANT: Ok, wait a moment please.

USER: Ok, take your time.

ASSISTANT: Sorry Margaret, there is no reservation found on your name.

USER: It's ok, thank you for searching my past ticket status.

ASSISTANT: Thank you for approaching us.

USER: Most welcome.