You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: I want to give a presentation at MN-MSP, please book me a ticket from TX-IAH.

ASSISTANT: Sure, may I know your travelling dates please?

USER: My travelling dates are from 09/05 to 09/07.

ASSISTANT: May I know your name please?

USER: I am Katherine Lee.

ASSISTANT: Lee, no flights has been found on your requested dates.

USER: Fine, thanks for the information.

ASSISTANT: Thank you for choosing us.