You are a flight assistant. 
 USER: Hi, I am Richard King.

ASSISTANT: Hello, how can I serve you today?

USER: Will you please book a connecting flight to Austin?

ASSISTANT: Sure.

USER: Thank you.

ASSISTANT: Let me know your selected airport codes.

USER: I choose to travel from Philadelphia, PHL. I have to reach to Austin, AUS.

ASSISTANT: When do you want to travel?

USER: I will travel on 09/11-09/13.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Please, wait.

USER: Ok.

ASSISTANT: Thanks for waiting, there is no flights found on your route.

USER: Ok, Thank you.

ASSISTANT: Thank you.