You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you now?

USER: I am planning to meet my friends, can you reserve flight ticket from AUS and OAK?

ASSISTANT: Sure, I am glad to help you with that. Can you please provide your preferable dates of travelling?

USER: My travelling dates are Mar,18 and Mar,20.

ASSISTANT: May I know your name to book a flight ticket?

USER: Myself Elizabeth Hall.

ASSISTANT: Do you have any connection limit?

USER: Yes, I prefer one connecting flight.

ASSISTANT: Any more specifications do you have?

USER: No.

ASSISTANT: Please wait a moment to check the flights. Unfortunately there are no flights running on your route with your required preferences.

USER: Oh! Sad to hear that. Anyway, I will find another alternative to complete my journey.

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

USER: Thank you for the information.