You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: I am planning to attend business meeting at OAK, can you please help me with booking a flight ticket from IAD?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: Sure, I would like to take off on Jan 22 and return on Jan 24.

ASSISTANT: Do you have any airline preferences?

USER: I would prefer normal cost airline.

ASSISTANT: Do you have any class preferences?

USER: No, but I need a flight with 1 connection.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: No.

ASSISTANT: Can you please provide your name to proceed further?

USER: My name is Dorothy Anderson.

ASSISTANT: Sorry, there are no flights available at your request.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for contacting us, have a nice day.

USER: You are welcome.