You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello,.

USER: I am Timothy Jackson.

ASSISTANT: How can I aid you today?

USER: I need to book a flight ticket from San Francisco with my friends to participate in the arts festival in Minneapolis.

ASSISTANT: Ok.

USER: Would you please help me in booking?

ASSISTANT: Sure, we are here to help you. To proceed for booking I need your airport codes of your locations.

USER: My airport codes are from CA-SFO to MN-MSP.

ASSISTANT: When did you scheduled your journey dates?

USER: My depart will be on 05/23 and return on 05/25.

ASSISTANT: Do you have any other specifications?

USER: I can afford up to 500.

ASSISTANT: Wait for a while.

USER: Ok.

ASSISTANT: Thanks for waiting. There is a direct flight found with your requested details.

USER: I need one connection.

ASSISTANT: Sorry, there is no connecting flight to your destination on your scheduled dates.

USER: Ok.

ASSISTANT: Thank you for availing us.

USER: Thank you for your service.