You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you today?

USER: I would like to visit Nutshell Bike tour at Austin, can you please book me a ticket?

ASSISTANT: Sure, please share your source and destination airport codes?

USER: My preferable airport codes are from IAH to AUS.

ASSISTANT: Help me with your travelling dates?

USER: I would like to leave between 08/27 and 08/29.

ASSISTANT: May I know your good name please?

USER: Myself Sandra Wright.

ASSISTANT: Do you prefer direct flight or connecting flight?

USER: I want connecting flight.

ASSISTANT: We are sorry to inform that we have only direct flight with your request.

USER: Ok, no problem. Thank you.

ASSISTANT: Thanks for availing us.