You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Can you please tell me how can I assist you?

USER: I am Benjamin Jones, help me to book a direct flight to meet my friend.

ASSISTANT: Ok, may I know travel dates of your journey?

USER: I will travel on 03/04 and I will return on 03/06.

ASSISTANT: May I know your source and destination airport codes?

USER: I will travel from TX-DFW to CA-LAX.

ASSISTANT: Sorry, no flight ticket found for you with direct flight.

USER: Ok, thank you for the information.

ASSISTANT: Most welcome.