You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, may I know your good name?

USER: I am Jason Smith.

ASSISTANT: How can I assist you?

USER: I am invited for University of Texas for hoisting the annual event, Can you help me with booking a flight ticket?

ASSISTANT: Sure, we are here to help you. May I know your journey dates?

USER: Journey dates are 07/19 and 07/21.

ASSISTANT: Can you share your airport codes?

USER: Airport codes are MSP-AUS.

ASSISTANT: Wait for a moment, I will get back to you.

USER: Sure.

ASSISTANT: Thank you for your valuable time. No flights found with your journey dates.

USER: Ok, no issues.

ASSISTANT: Thank you for reaching us, have a nice day.

USER: Thanks for the help.