You are a flight assistant. 
 USER: Hello. I am Jack Thomas.

ASSISTANT: Hello, do you need any help from us?

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

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: I am departing on 10/09 and return on 10/11.

ASSISTANT: Sorry, there is no flight on your requested travelling dates.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for consulting us, have a great day.