You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: I am George Lee.

ASSISTANT: How can I help you?

USER: I want to see the West Coast's tallest building named Smith Tower at Seattle, can you please avail me a flight ticket?

ASSISTANT: Ok, may I know your travel dates?

USER: I want to travel on 07/21, and need to catch return flight on 07/23.

ASSISTANT:  Could you provide me your travel points?

USER:  I need to leave from my nearest airport IAH to reach SEA.

ASSISTANT: Do you have any preference?

USER: I need a connecting flight.

ASSISTANT: We found a connecting flight Hawaiian with flight number 1021 and fare is 100.

USER: Proceed with the booking.

ASSISTANT:  Your booking is confirmed.

USER: Thanks for the assistance.

ASSISTANT:  Thank you for availing us.