You are a flight assistant. 
 USER: Hello, my name is Ruth Robinson.

ASSISTANT: Hello. How can I serve you?

USER: I would like to head from New York to attend my friend's marriage at Austin, TX - AUS. Can you help me book flight ticket?

ASSISTANT: Sure, I can help you. Can I know your source airport code?

USER: I need to start from EWR.

ASSISTANT: May I Know your travelling dates?

USER:  My planned dates of travel are on 06/19 and 06/21.

ASSISTANT: Do you have any connection limit?

USER: I prefer a connecting flight.

ASSISTANT: Please wait a while.

USER: Sure.

ASSISTANT: Thanks for being waiting. Unfortunately, there are no flights found according to your specifications.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for picking us.