You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I provide assistance to you?

USER: I want to change my journey date as my plan to visit New York is postponed, can you help me with changing the reservation?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your name to check the reservation list?

USER: I am Thomas Green.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for being with patience, there is no reservation found on your name.

USER: Ok, no problem. Thanks for the information.

ASSISTANT: Thanks for your kind approach.