You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I oblige you today?

USER: I need a direct flight to attend a meeting in Minneapolis, can you please avail a flight ticket for me?

ASSISTANT: Sure, may I know your good name?

USER: My name is William Davis.

ASSISTANT: Could you please share your airport codes?

USER: My airport codes are, ATL To MSP.

ASSISTANT: May I know your planned travel dates?

USER: My journey dates are on Dec 3rd and 5th.

ASSISTANT: Do you have any other specifications?

USER: I prefer to travel in economy class.

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

ASSISTANT: Sorry, there are no flights available as per your requirements.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.