You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me in booking my flight ticket from IAH to MSP?

ASSISTANT: Sure, I am here to help you in booking. Can you please share your travel dates?

USER: Thank you and my travelling dates are from 05/27 to 05/29.

ASSISTANT: Ok, please share your name.

USER: Myself Charles Hill.

ASSISTANT: Let me know your connection limit.

USER: I need a direct flight.

ASSISTANT: Do you have any specification?

USER: No.

ASSISTANT: Sorry, no flights are available on your preferable travel dates.

USER: It's ok, thank you for your help.

ASSISTANT: Thank you for reaching us, have a nice day.