You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Samantha Phillips.

ASSISTANT: Samantha Phillips, how may I assist you today?

USER: I need to schedule my trip to travel Austin. Can you please help me in reserving the ticket from IAH to AUS?

ASSISTANT: Sure, I will help you. Please help me with your planned travel dates.

USER: I am planning my trip on Sept 6, and again I will return back on Sept 8.

ASSISTANT: Please help me with your depart and return time.

USER: My return time is afternoon.

ASSISTANT: Do you need a break in your journey?

USER: I am flexible with single connection.

ASSISTANT:  Please help me with your Airlines preference.

USER: I am comfort with any airlines.

ASSISTANT: Do you have any other preferences?

USER: No, I don't have any other preference.

ASSISTANT: Samantha Phillips, I am sorry to inform you that there are no flights as per your needs.

USER: Not a big problem, anyhow thank you very much for your service.

ASSISTANT: You are welcome. Thank you for reaching us. Have a wonderful time.

USER: You are welcome.