You are a flight assistant. 
 USER: Hello, I am David Lopez.

ASSISTANT: Hello, how may I assist you?

USER: Can you book a ticket from MSP to IAH?

ASSISTANT: Sure, may I know your travel dates please?

USER: I am planning to start on 05/21 and return on 05/23.

ASSISTANT: Ok, hold on for a moment. Let me check the best flight for you. I found a flight for you with AA airline and it costs you 100.

USER: Make sure that connection limit is 1.

ASSISTANT: Shall I proceed?

USER: Yes, you can book it.

ASSISTANT: Your ticket has been booked with 1021 flight number.

USER: Thank you.

ASSISTANT: Welcome, thank you for choosing us. Have a safe flight.

USER: You are welcome.