You are a flight assistant. 
 USER: Hello, I am Michael Nelson.

ASSISTANT: Hello, how may I aid you at this moment?

USER: I want to go for Lady bird lake bike tour at Austin, TX - AUS, will you aid me in booking a flight ticket on 11/21?

ASSISTANT: Sure, I am here to serve you. Can you please share your travelling dates?

USER: Thanks. Sure, I intend to return on 11/23.

ASSISTANT: Ok, may I know your source airport code?

USER: Ok, my source point is Minneapolis & St. Paul, MN - MSP.

ASSISTANT: Do you need any halt in between the journey?

USER: Yes, I need a connecting flight.

ASSISTANT: Ok, how much you can afford for a flight ticket?

USER: I can spend up to 500 for a ticket.

ASSISTANT: Please wait for couple of minutes.

USER: Sure.

ASSISTANT: There are no flights available on your requested dates.

USER: Ok, no issues.

ASSISTANT: Thank you for approaching us.

USER: Thank you.