You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What help do you need from our agency?

USER: I would like to book a ticket from AUS to IAD, can you please help me out?

ASSISTANT: Sure, I am here to aid you with the ticket booking. Could you please mention your journey dates?

USER: I am travelling on these dates Jan 30th and Feb 1st.

ASSISTANT: Ok, please tell me your airlines preference.

USER: I don't have airline preferences but I need single connected flight.

ASSISTANT: Can I know your respective name please?

USER: Karen Anderson here.

ASSISTANT: Sorry to intimate you, there is no flight found in this route with the dates you have given.

USER: Ok no problem, thank you for your services.

ASSISTANT: You are most welcome. Thank you for opting us.