You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Can you please help me with booking a flight ticket from JFK to IAD?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: My travelling dates are from Mar 23-25.

ASSISTANT: Do you have any preferences about flight connections?

USER: I am comfortable with connecting flight.

ASSISTANT: Do you have any preferences about airline?

USER: I prefer to fly in big brand airlines.

ASSISTANT: Please mention your name.

USER: Sure, Amanda Hill here.

ASSISTANT: There are no flights found under your preferable details.

USER: No problem, thank you for the information.

ASSISTANT: Welcome, have a great day.