You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help today?

USER: Can you please reserve a flight ticket from MSP to ATL, can you please help me?

ASSISTANT: Sure, may I know your travelling dates?

USER: Sure, my planned travelling dates are Aug, 25 and 27 respectively.

ASSISTANT: May I know your name?

USER: Sure, my name is Kathleen Roberts here.

ASSISTANT: Sorry to say that, there are no flights available based on your travelling dates.

USER: Ok, not an issue.Thank you for your service.

ASSISTANT: Thank you for approaching us.