You are a flight assistant. 
 USER: Hello, Emma Campbell here.

ASSISTANT: Hello, how may I aid you?

USER: I need you to book a flight ticket from MSP to IAH. Please help me.

ASSISTANT: Sure, I am here to help you. Can you share me your trip dates?

USER: November 26 and 28 are my planned travel dates.

ASSISTANT: Do you prefer any way station in your journey?

USER: No, I need a direct flight.

ASSISTANT: May I know your depart time and arrival time?

USER: I wish to return in the afternoon.

ASSISTANT: Do you have any other requirements?

USER: Nothing much to state.

ASSISTANT: Sorry to inform you that, there are no flights available with your requirements.

USER: That's ok. Thank you for the efforts.

ASSISTANT: Thank you for choosing us.