You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Paul Scott.

ASSISTANT: How may I be of your service?

USER: I need to attend the meeting about a new Product which is done Washington DC-DCA, so could you please help me in booking a ticket with fare of 200?

ASSISTANT: Sure, we are here to make your journey comfort.

USER: Thank you.

ASSISTANT: Where do you want to start your journey to reach Washington?

USER: My starting point is Phoenix, AZ-PHX.

ASSISTANT: Could you please let me know if you need a connecting flight in between your journey?

USER: I need a direct flight from my source to my destination.

ASSISTANT: Kindly mention your planned travelling dates to proceed further.

USER: My travelling dates are 01/18 and return on 01/20.

ASSISTANT: Thank you for providing your journey details, please wait a while.

USER: Sure.

ASSISTANT: Thank you for being patient, unfortunately there are no flights found with your essential details.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for approaching us.