You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello. How may I aid you today?

USER: As it's business trip I need to fly Detroit. Could you please book a flight.

ASSISTANT: Sure, we make your journey comfortable . Please forward your travelling dates?

USER: Ok. My travel dates are from 05/05 to 05/07.

ASSISTANT: Let me know your landing airport in Detroit?

USER: Airport code is MI-DTW.

ASSISTANT: Can I have your source airport code?

USER: It's CA-LAX.

ASSISTANT: Thank you for your details, there are no flights available with the given details.

USER: Thanks for the assistance.

ASSISTANT: May I know your good name?

USER: I am Jonathan Martin.

ASSISTANT: Thank you.