You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: I want to fly from SEA to IAD to meet my friend. Can you please book a direct flight ticket?

ASSISTANT: Sure, May I know your travelling dates?

USER: My journey dates are Mar 03 and Mar 05.

ASSISTANT: Do you have any other specifications?

USER: I am looking for a normal cost airline.

ASSISTANT: May I know your name?

USER: I am Brenda Mitchell.

ASSISTANT: Thanks for your details, there are no flights found on your data.

USER: No problem, thank you for your information.

ASSISTANT: Thank you.