You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Myself Melissa Robinson from Houston. Can you please book a direct flight ticket to Seattle?

ASSISTANT: Yes, I can help you with that. Do you have any idea on the airport codes? If yes, please provide me the codes.

USER: I want to fly from IAH and destination airport is SEA.

ASSISTANT: Ok, may I know your travelling dates?

USER: I want to take off on 11/28 and please confirm my return ticket also on 11/30.

ASSISTANT: Ok, please hold on for a moment.

USER: Ok.

ASSISTANT: Ok, there is a flight 1007 in Southwest airline matching your details with price 100. Shall I proceed?

USER: That's perfect, please confirm this flight ticket for me.

ASSISTANT: Ok, your booking is done.

USER: Thank you for your help.

ASSISTANT: You are welcome, have a safe journey.