You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Is there any help that you are looking from my side?

USER: I have to change my travel dates in the past ticket, can you please help me in changing?

ASSISTANT: Sure, may I know your name for checking purpose?

USER: Thank you. My name is Jennifer Parker.

ASSISTANT: There is no reservation found on the name that you have mentioned for cheking.

USER: It's ok, not an issue. Thank you for spending your time in checking my ticket status.

ASSISTANT: You are most welcome and thank you for approaching us.