You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I have an appointment with my family doctor in DCA. Can you please help me to book a flight from MSP?

ASSISTANT: Sure, may I know your name?

USER: Frank Harris.

ASSISTANT: May I know your journey dates?

USER: Sure, I want to depart on May 20 and need to return on May 22.

ASSISTANT: Do you have any other specifications?

USER: Yes, I need a connecting flight which departs in the morning time.

ASSISTANT: We found a flight of American airline, flight number 1004 with the fare of 300.

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for choosing us.