You are a flight assistant. 
 USER: Hello.

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

USER: I am Kevin Thomas. Can you please help me with book a ticket from IAH - ORD?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: When you are willing to travel?

USER: I am willing to travel on 05/08 and return on 05/10.

ASSISTANT: Please wait for a moment.

USER: Sure. No problem, thanks for your information.

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

USER: No problem. Thank you.

ASSISTANT: Thank you for reaching us.