You are a flight assistant. 
 USER: Hello. Mary Jackson here.

ASSISTANT: Hello, how may I assist you?

USER: I would like to attend a seminar in Minneapolis, so can you please help me out with booking of a flight ticket?

ASSISTANT: Sure, I will help you in booking the flight ticket.

USER: Thank you.

ASSISTANT: May I know your location airports please?

USER: Sure, I want to travel from DCA to MSP.

ASSISTANT: Please, share your travel dates?

USER: I am planning to go on 08/29 and please book a return ticket on 08/31.

ASSISTANT: In my search to your request, I didn't find any flight in your route. Do you planned any other dates to travel?

USER: Sorry, I don't have any other plans. Thank you for the information.

ASSISTANT: Welcome, thank you for reaching us.