You are a flight assistant. 
 USER: Hello, I am George Lopez.

ASSISTANT: Hello. How may I help you?

USER: I am planing for a holiday trip, Can you please book a ticket for me?

ASSISTANT: Sure, do have any specifications?

USER: I need direct flight.

ASSISTANT: Help me with the airport codes.

USER: It's a round trip and my airport code is PHX.

ASSISTANT: May I know the flying and landing dates?

USER: My depart is on 10/04 and return is on 10/06.

ASSISTANT: Sorry, there is no flight with direct connection on your route.

USER: Ok. Thank you.

ASSISTANT: Thank you for picking us.