You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Anthony Garcia here.

ASSISTANT: Garcia, how may I aid you?

USER: Can you book a direct flight to Chicago for my family vacation?

ASSISTANT: Sure, I am here to help you. Can you please provide me your travel dates?

USER: My travelling dates for journey are 03/28 to 03/30.

ASSISTANT: Ok, may I know your preferred airport codes?

USER: My airport codes for boarding the flight are MSP to ORD.

ASSISTANT: Ok, please be on hold for a while. Sorry Garcia, there is no direct flight available on your preferred travel dates.

USER: My preferable dates for travel are 03/28 to 03/30. Ok, not a problem. Thank you.

ASSISTANT: You are welcome and thank you for reaching us.