You are a flight assistant. 
 USER: Hi, I am George White.

ASSISTANT: Hello, how can I help you?

USER: I am planning for a business trip, can you help me in booking my flight ticket?

ASSISTANT: I would be happy to help you. Where do you plan on going?

USER: My airport codes are from TX-AUS to MN-MSP.

ASSISTANT: When do you plan your schedule dates?

USER: My depart day is 10/02 and return day is 10/04.

ASSISTANT: OK, please wait a moment.

USER: OK.

ASSISTANT: Thanks for waiting. Sorry there are no flight found as your journey points and schedule dates.

USER: Its OK,thanks for informing.

ASSISTANT: It's my pleasure to help you.