You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Nicholas  Turner.

ASSISTANT: How can I help you today?

USER: Can you please book a flight ticket from HOU to IAH?

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

USER: Thank you. I have planned my travel dates as Aug 27 and Aug 29.

ASSISTANT: Do you have any specification?

USER: I would like to return in morning time so please make sure that.

ASSISTANT: Please wait a moment.

USER: Sure but check for single connecting flight.

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

USER: Oh! It is sad to hear. Anyway, thank you for your time.

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