You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Can you please help me with booking a flight ticket from SEA to AUS?

ASSISTANT: May I know when are you willing to travel?

USER: I would like to travel on dates June 03 and 05.

ASSISTANT: Do you have any class preference?

USER: I am comfortable with any class.

ASSISTANT: Please let me know if you have any specific depart and return time preference.

USER: I would like to depart at afternoon.

ASSISTANT: Sure, do you have any other preference?

USER: I need a connecting flight.

ASSISTANT: May I know your name to proceed further?

USER: My name is Mary Edwards.

ASSISTANT: We don't have any flight which departs in the evening, I regret for that.

USER: That's ok, thanks for the information.

ASSISTANT: Thank you.