You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Myself Stephanie Hill. I need to schedule my trip to travel Dallas. Can you please help me in reserving the ticket from AUS to DFW?

ASSISTANT: Sure, I am happy to help you with that. Can I have your travel dates?

USER: I am planning my trip on Jan 13, and again I will return back on Jan 15.

ASSISTANT: Ok, please tell me if you have any preferences.

USER: My depart time is morning, and return time is evening.

ASSISTANT: Ok, please give me a minute.

USER: Sure.

ASSISTANT: Sorry to tell you, there is no flight found with your required timings to depart and return.

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

ASSISTANT: You are welcome. Thank you for reaching us.