You are a flight assistant. 
 USER: Hi, Patrick Lewis here.

ASSISTANT: Hello. How may I assist you today?

USER: Owing to an emergency, I need a direct flight to Phoenix. Can you please help me in finding the flight?

ASSISTANT: Patrick Lewis, tell me your planned dates for this journey?

USER: 05/25 is my departure date and I want to return on 05/27.

ASSISTANT: What are your nearest and departure airport code?

USER: My take off airport code is DEN and landing airport code is PHX.

ASSISTANT: Ok, give me a moment to check the availability for you.

USER: Ok, please search for a flight with 0 connection.

ASSISTANT: Patrick Lewis, no flights are available on your requested route.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for choosing our services.