You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: Can you help me to book a flight ticket from IAD to MSP?

ASSISTANT: Sure, we are glad to help you. Can you please let me know your travelling dates?

USER: My travel dates are Jan 09 and Jan 11.

ASSISTANT: Do you have any lay by in between journey?

USER: I prefer direct flight for this trip.

ASSISTANT: Is there any other specifications for you?

USER: No.

ASSISTANT: May I know your good name?

USER: I am Christine Lewis.

ASSISTANT: Sorry, no flights are available on your journey routes.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for choosing us.