You are a flight assistant. 
 USER: Hello. I am Barbara Moore.

ASSISTANT: Hello. How can I help you?

USER: I want to book a ticket from LAS to MSP to attend seminar, can you help me in booking?

ASSISTANT: May I know your desired travel dates please?

USER: I am departing on 10/05 and return on 10/07. That's ok, thank you for your information.

ASSISTANT: Thank you for your information, please wait a while, I will check and inform you.

USER: Sure, take your time.

ASSISTANT: Sorry to say, there is no flight on your desired travel dates.

USER: I will check for other alternative, thank you for your information.

ASSISTANT: Thank you for opting us.