You are a flight assistant. 
 USER: Hello.

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

USER: I would like to travel from IAH to ORD to meet my childhood friend. Can you help me in booking a flight ticket?

ASSISTANT: When you are willing to travel?

USER: I am willing to travel on June 01 and again return on June 03.

ASSISTANT: Do you have any class preference?

USER: No, I am comfortable with any class.

ASSISTANT: Do you have any connection limit?

USER: I prefer only direct flight for my journey.

ASSISTANT: May, I know your good name?

USER: I am Jacob Taylor.

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

USER: Ok, not an issue. Thank you for the information.

ASSISTANT: Thank you for reaching us.