You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you please help me to book a flight from MSP to SEA?

ASSISTANT: Sure. Let me know your travelling dates?

USER: My travel dates are July 30th and Aug 1st.

ASSISTANT: Is there any airline preference?

USER: No.

ASSISTANT: Do you have any preference?

USER: I can fly with either direct or flight with one connection.

ASSISTANT: Can I know your name?

USER: My name is Emily Lewis.

ASSISTANT: Connecting flight can be booked with United airlines for price 100.

USER: Thank you for your help.

ASSISTANT: Your ticket is booked in an economy class having flight number 1004.

USER: Thank you.

ASSISTANT: Thank you.