You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you now?

USER: I am Frank Scott want to visit Seattle, can you book a ticket on 02/13 and 02/15?

ASSISTANT: Sure, may I know the travelling airport codes please?

USER: Yes, I want to fly from IAH to SEA.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Thank you for waiting, there is a flight 1009 in AA airline has the price 100.Can I proceed with this booking?

USER: Yes, proceed with my booking.

ASSISTANT: Your ticket has been booked, have a safe journey.

USER: Thank you.

ASSISTANT: You are welcome, have a nice day.