You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: Can you please book a flight from AUS to SEA?

ASSISTANT: Sure, may I know your planned travel dates?

USER: Sure, I want to depart on May 8 and need to return on May 10.

ASSISTANT: Ok, do you have any class preference?

USER: Yes, I prefer an economy class.

ASSISTANT: Is there any connection limit?

USER: I am looking for a flight with single connection.

ASSISTANT: Any other preferences you have for your journey?

USER: My return time must be in the morning.

ASSISTANT: Ok, can you please share your name to proceed further?

USER: I am Dorothy Johnson.

ASSISTANT: Sorry, no flights are running on that route with your planned travel dates.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you for contacting us,.