You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: Can you help me to book a direct flight?

ASSISTANT: Ok, may I know your travelling dates?

USER: My travel dates are Nov 08 and Nov 10.

ASSISTANT: Please let me know your travelling airport codes?

USER: My airport codes are SEA and IAH.

ASSISTANT: Can I know do you have any other preference?

USER: No, thanks for asking.

ASSISTANT: Here is a direct flight with ticket fare 200 and 1023 as flight number in United airline. Shall I proceed with booking?

USER: Please proceed to book my flight ticket in this airlines.

ASSISTANT: May I know your name?

USER: I am Alexander Carter.

ASSISTANT: Your ticket is confirmed.

USER: Thank you.

ASSISTANT: Thank you for reaching us.