You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is David Parker and I want to book the flight ticket from MSP to AUS.

ASSISTANT: David Parker, I am glad you have contacted us. I will help you. Please help me with your planned travel dates.

USER: My travel dates are 07/14 and 07/16.

ASSISTANT: Please let me know with your connecting flight preference.

USER: I need a connecting flight.

ASSISTANT: Please help me with your preferred depart and return time.

USER: I would like to depart in the morning.

ASSISTANT: Please let me know with your preferred class to travel.

USER: I am comfortable with any class.

ASSISTANT: Please let me know if you have any other preferences with respect to your journey.

USER: No preferences.

ASSISTANT: David Parker, I am sorry to inform you that there are no flights available.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for understanding. Thank you for reaching us. Have a wonderful day.

USER: Your welcome.