You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I am looking for a flight from BOS to AUS, please check the availability.

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know the time concern please?

USER: I am comfortable with any time.

ASSISTANT: Kindly, mention your starting and return journey dates.

USER: Oct 31st and Nov 2nd are my start and return dates.

ASSISTANT: Which class would you like me to choose?

USER: Usually I preferred to travel in economy class.

ASSISTANT: Do you need connection in your journey?

USER: I need single connection only.

ASSISTANT: May I know your good name for further process?

USER: Sure, my name is Timothy Martin.

ASSISTANT: Thank you for sharing your journey details. Please, hold on.

USER: OK.

ASSISTANT: Thank you for your valuable time. We are sorry to inform you that, no flights are running on your journey routes.

USER: Ok, that's not a problem. I will choose other alternative. Anyhow thanks for your response.

ASSISTANT: Thank you for reaching us, have a good day.