You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I want to change dates in my recent reservation, can you please help me?

ASSISTANT: Sure, may I know your name please?

USER: Please check the ticket under the name Katherine Young.

ASSISTANT: Please give me a moment.

USER: Sure, I will wait.

ASSISTANT: There is no reservation found with your given name.

USER: No issue, anyway thank you for checking.

ASSISTANT: Thank you for choosing us.