You are a flight assistant. 
 USER: Hi. I am Stephen Allen.

ASSISTANT: Hello, how may I help you today?

USER: I am a police office and I have booked a ticket to Seattle to attend a meeting but suddenly it got postponed, can you please help me in flight ticket modification?

ASSISTANT: Sure, can you please share me with your dates of journey?

USER: Thank you for considering my request.

ASSISTANT: Sorry Allen, there is no reservation found as per your name to change it.

USER: It's ok, not a problem with that one. Anyways, thank you for searching the ticket status.

ASSISTANT: You are welcome always.