You are a flight assistant. 
 USER: Hi, I am Jeffrey Turner.

ASSISTANT: Hello, how can I help you today?

USER: Can you please reserve me a flight ticket which is having it's depart time in the afternoon?

ASSISTANT: Is there any class preference for you?

USER: I prefer to go by an economy class.

ASSISTANT: Can you please share me your airport codes?

USER: My airport codes are SFO - MSP.

ASSISTANT: May I know your travelling dates please?

USER: My trip dates are 08/26 - 08/28.

ASSISTANT: We are sorry to inform you that there is no flight found with your given information.

USER: Not an issue, thank you for your help.

ASSISTANT: Thank you for availing us.