You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am planning to visit Washington, will you help me in booking the flight ticket from MSP to IAD?

ASSISTANT: Sure, may I know your travel dates?

USER: My travelling dates are Oct 03 and Oct 05.

ASSISTANT: Do you have any specifications?

USER: I need a direct flight with normal-cost.

ASSISTANT: On which name do you like to travel?

USER: Myself David Evans.

ASSISTANT: Please wait a moment.

USER: Ok, I will wait.

ASSISTANT: Do you prefer connecting flight or direct flight?

USER: I have already mentioned.

ASSISTANT: Sorry, there is no flight on your details.

USER: Ok, not an issue.

ASSISTANT: Thank you.

USER: Thank you for your information.