You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Anthony White.

ASSISTANT: How may I serve you at this moment?

USER: I am planning to attend convocation meeting at HOU, can you please help me with booking a flight ticket from ORD?

ASSISTANT: Sure, do you need any lay by in between the journey?

USER: I am looking for a direct flight.

ASSISTANT: Ok, share your preferred travelling dates.

USER: Sure, I would like to take off on May 11 and return on May 13.

ASSISTANT: Ok, do you have any other specifications?

USER: I would like to depart during afternoon time.

ASSISTANT: Ok, please hold for a moment.

USER: Sure, take your time.

ASSISTANT: There are no flights found on your requested dates.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.