You are a flight assistant. 
 USER: Hello,. I am Carol Collins.

ASSISTANT: Hello, how can I help you today?

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: Sure, kindly mention your travel dates.

USER: I want to travel on 11/23, and need to catch return flight on 11/25.

ASSISTANT: Can you please provide me your airport codes.

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

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: There is a flight with your requirement, airline is Spirit with price 100. Shall I proceed with booking?

USER: Proceed with the booking.

ASSISTANT: Your booking is done.

USER: Thanks for the help.

ASSISTANT: Thanks for reaching us.