You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: I need to book a flight ticket from AUS to DCA, can you help me in booking a flight ticket?

ASSISTANT: Sure, may I know your travelling dates?

USER: Sure, my journey dates are May 9 and May 11.

ASSISTANT: Do you have any connection limit?

USER: I am comfortable with any flight.

ASSISTANT: May I know your good name?

USER: Sure, Amy Clark here.

ASSISTANT: Any other requirements to be met?

USER: I want to fly in a economy class.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for reaching us.