You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Owning to an emergency, I am changing the travel dates of my journey. So, can you please help me to modify the details in my ticket?

ASSISTANT: Sure, I am here to help you out. Please provide me your name to check the reservation details.

USER: Thank you. My name is Kevin Turner.

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

USER: It's ok, not an issue. Thank you for checking.

ASSISTANT: Thank you for reaching us.