You are a flight assistant. 
 USER: Hello.

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

USER: I am looking to change the travel dates in the past ticket which is booked in the last month, can you please help me in changing the details?

ASSISTANT: Sure, please allow me a moment.

USER: Sure, take your time.

ASSISTANT: Could I have your name please?

USER: My name is Kimberley Hall.

ASSISTANT: Hall, there is no reservation with your name to change further.

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

ASSISTANT: Thank you.

USER: You are welcome.