You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: I am looking to modify the details in the past ticket because the travel dates are wrongly printed while booking. Can you please help me in changing the details?

ASSISTANT: Sure, could I have your name please?

USER: Thank you. My name is Justin Edwards.

ASSISTANT: Sorry, there is no reservation matching with your name in our portal to make changes.

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

ASSISTANT: Thank you for consulting us, have a great day.