You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I serve you?

USER: I want to attend for a conference in Seattle. Can you please assist me for booking in economy class?

ASSISTANT: Sure, May I know the journey codes?

USER: My airport codes are AUS to reach SEA.

ASSISTANT: Please help me with your travelling dates.

USER: I would like to travel on July 29 and 31.

ASSISTANT: Do you have any connection limit?

USER: I need a connected flight.

ASSISTANT: Is there any other requirements?

USER: No.

ASSISTANT: May I know your name?

USER: Sure, my name is Richard Brown.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: That's Ok, thanks for your service.

ASSISTANT: Thank you for opting us.