You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am Melissa Lee. I am looking for a direct flight, could you please help me with booking a flight ticket?

ASSISTANT: Sure, can you please share your travel dates?

USER: I would like to take off on 06/05 and return on 06/07.

ASSISTANT: Could you please help me with the airport codes?

USER: My nearest source airport code is DFW and destination airport code is PHX.

ASSISTANT: Let me check for the availability of flight.

USER: Sure, take your time.

ASSISTANT: Melissa, there is  no flight available with 0 connection.

USER: That's ok, not an issue. Anyways, thank you for the information.

ASSISTANT: Thank you for contacting us.