You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me to reserve a plane ticket from BOS to AUS?

ASSISTANT: Sure, please share your journey dates?

USER: Thank you. My preferable journey dates are May 29 and May 31.

ASSISTANT: Do you have any specifications?

USER: I am looking for a flight which returns in the afternoon time.

ASSISTANT: Is there any class preferences?

USER: No but I need a flight which is having a single connection limit.

ASSISTANT: May I know your good name?

USER: My name is Jeffrey Williams.

ASSISTANT: Sorry, no flights found on your given details.

USER: It's ok, not an issue with that. Thanks a lot for checking the flight availability.

ASSISTANT: Thank you for choosing us.

USER: You are most welcome.