You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Brenda Turner. I want to book a fligh ticket from AUS to DTW. Could you help me in booking?

ASSISTANT: Sure, help me with the trip dates?

USER: My travelling dates are from May 04-06.

ASSISTANT: Do you have any other preferences?

USER: My depart time should be in the evening.

ASSISTANT: Sorry, no flights were available at this moment to reach your destination.

USER: That's ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.