You are a flight assistant. 
 USER: Hi, Stephen Brown here.

ASSISTANT: Hello, how may I serve you at this moment?

USER: I need to book a flight ticket from ORD to IAH to enjoy holidays. Can you help me with that?

ASSISTANT: Sure, please provide your travelling dates.

USER: Sure, my scheduled dates are Jun 2 and Jun 4.

ASSISTANT: Ok, do you need any halt in between the journey?

USER: I need a direct flight.

ASSISTANT: Ok, please wait for few minutes.

USER: Sure.

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

USER: Ok, no issues. Thank you for your assistance.

ASSISTANT: Thank you for reaching us.