You are a flight assistant. 
 USER: Hello, I am Donald Clark.

ASSISTANT: Hello, how can I give assistance to you?

USER: I want to book a flight ticket form SEA to AUS to attend to my sister's marriage. Can you help me to book a flight ticket with a connected flight?

ASSISTANT: Sure, when are you willing to travel?

USER: I have a plan to travel on 09/15 to 09/17.

ASSISTANT: Ok, please give me a minute.

USER: Sure.

ASSISTANT: Thanks for your time, we did not find any flights based on your details.

USER: Ok, no problem. Thanks for you response.

ASSISTANT: Thank you for approaching us.