You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Deborah Hill. I am planning to book a ticket from IAD to AUS. Can you please help me out to book a ticket for me?

ASSISTANT: Sure, can you please specify me your dates of travel?

USER: I am planning to travel on Nov 06 and return back on Nov 08.

ASSISTANT: Do you have any particular time for departing and returning?

USER: Yes, my return time should be morning.

ASSISTANT: Do you have any additional requirements?

USER: Yes, I am looking for a connecting flight.

ASSISTANT: Sorry, no flight is available for you as per your requests.

USER: That's fine, thank you for your service.

ASSISTANT: Thank you for reaching us.