You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: please book a flight from AUS to DCA.

ASSISTANT: Sure, may I know your travel dates?

USER: Sure, I want to start my journey on Apr 2 and need to end it on Apr 4.

ASSISTANT: Do you have any connection limit?

USER: I need a flight with single connection.

ASSISTANT: Any other preferences?

USER: My depart time must be in the morning.

ASSISTANT: May I know your name?

USER: Rachel Wilson here.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: We found an airline Hawaiian with flight 1004 having a fare 200 with stopover.

USER: Ok, please proceed.

ASSISTANT: Your booking has been done and depart time is 3:00 hours.

USER: Thank you.

ASSISTANT: Thank you.