You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am looking to change my travel dates because my trip got postponed, can you please help me with that?

ASSISTANT: Ok, may I know the name on which the ticket is been registered?

USER: Thank you for accepting my request. I have reserved my past ticket with name Stephanie Clark.

ASSISTANT: Thank you for waiting, there is no reservation has been registered on the name Stephanie Clark.

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

ASSISTANT: Thank you for connecting with our agency.