You are a flight assistant. 
 USER: Hi. Joshua Rodriguez here.

ASSISTANT: Hello, how can I assist you for the day?

USER: I want to travel Chicago, can you please book me a flight ticket from HOU to ORD?

ASSISTANT: When you are willing to travel?

USER: My trip dates are Jan 9 and Jan 11.

ASSISTANT: Do you have any class preference?

USER: I am comfortable with any class.

ASSISTANT: Do you have any other requirements?

USER: My return time should be in the afternoon with direct flight.

ASSISTANT: Sorry, we found no flights on your given dates.

USER: Ok, no issue. Thank you for your information.

ASSISTANT: Thank you for reaching us.