You are a flight assistant. 
 USER: Hi, I am Frank Lee.

ASSISTANT: Hello, how may I support you?

USER: I have a meeting with my office heads at Benaroya hall on  which is at Seattle, can you please book me a ticket?

ASSISTANT: Sure, when do you want to travel?

USER: My travel dates are from 10/24 to 10/26.

ASSISTANT: Please mention your airport codes.

USER: My airport codes are from Charlotte, NC-CLT to Seattle, WA-SEA.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT: Spirit airline with flight number 1013 is going on your way and the fare is 200. Shall I proceed?

USER: Please proceed for booking.

ASSISTANT: Your booking is done.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you for reaching us.