You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I be of your assistance today?

USER: Can you help me to book a flight ticket from LAX to AUS?

ASSISTANT: Sure, On which dates would you like me to book a flight ticket for you?

USER: I want to take off on 21 Feb and return on 23 Feb.

ASSISTANT: For booking purpose I required your name, can I know your name?

USER: I am Laura Martin.

ASSISTANT: Please share your connection limit.

USER: I need a connecting flight.

ASSISTANT: Kindly share your other specifications.

USER: I would like to prefer to travel in normal cost and return in the evening.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: Oh! that very sad to hear, thank you.

ASSISTANT: Thank you for availing us.