You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Samuel Moore.

ASSISTANT: How may I help you?

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

ASSISTANT: May I know your travel dates please?

USER: My trip dates are from May 17 to May 19.

ASSISTANT:  May I know your preferable journey timings?

USER: My return time is morning.

ASSISTANT: Is there any another specifications on your trip, so that I can arrange like that only.

USER: I prefer to travel in economy class.

ASSISTANT: Sorry, no flight is available for you as per your requests.

USER: That's ok, not a problem. Thanks for your information.

ASSISTANT: Thanks for choosing us.