You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you help me in booking a flight ticket from SFO to IAD?

ASSISTANT: Sure, we are here to help you. Can you share me your travelling dates?

USER: Thank you. I want to travel on 11/03, and return on 11/05.

ASSISTANT: Do you have any other specifications?

USER: I need a economy class.

ASSISTANT: May I know your name?

USER: I am Patricia Wilson.

ASSISTANT: Ok, wait for some time. Thanks for waiting there are no flights found on your details. Thanks for approaching us.