You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I serve you?

USER: I want to celebrate my mother's birthday at Los Angeles. So, I need your assistance in booking a ticket.

ASSISTANT: Sure, May I know the journey codes?

USER: My boarding point is MSP and my landing point is LAX.

ASSISTANT: Please help me with your trip dates.

USER: My journey dates are from 03/19 to 03/21.

ASSISTANT: Can I get your name?

USER: I am John Thompson.

ASSISTANT: Please give a minute.

USER: Please book a ticket with direct flight.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: It's ok.

ASSISTANT: Thank you for reaching us.

USER: Thank you for the information.