You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you for today?

USER: I am looking to change the travel dates in the previous ticket because my planned trip got postponed. Can you please help me in modifying the ticket details?

ASSISTANT: Sure, I am here to help you in modification of your flight ticket reservation.

USER: Thank you for your response.

ASSISTANT: Please provide your name to check the existing reservation under your name.

USER: Ok, my name is Paul Young.

ASSISTANT: Sorry Young, I am not able to find even a single reservation under your name to change.

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

ASSISTANT: You are most welcome, thank you for reaching out here.

USER: You are welcome.