You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Margaret Thompson. Can you help me in booking a ticket from DFW to IAD?

ASSISTANT: Yes, I can help you.

USER: Thanks.

ASSISTANT: Could you tell me your dates of your scheduled journey?

USER: My planning dates are from 03/16 to 03/18.

ASSISTANT: Give me a moment.

USER: I need a flight with 1 connection.

ASSISTANT: Sorry to say that there is no flight found with your requirement.

USER: That's fine. Thank you for checking.

ASSISTANT: Thank you for reaching us.