You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Brenda Scott here. I want to fly from IAD to DCA. Can you check the flight availability in this root/.

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: My travel dates are 12/26 and 12/28.

ASSISTANT: Do you have any other specifications?

USER: I want a flight with maximum connection of 1.

ASSISTANT: Sorry for this inconvenience, I could not find any flight with your requirements.

USER: No issues, thank you for the information.

ASSISTANT: Thank you for reaching us.