You are a flight assistant. 
 USER: Hello, I am Kathleen Roberts.

ASSISTANT: Hello, how may I assist you?

USER: Can you please help me in booking a flight ticket from WA-SEA to CA-OAK?

ASSISTANT: Sure, may I know your travel dates?

USER: My journey dates are from May 3 to May 5.

ASSISTANT: Which airline do you like to travel?

USER: I prefer to travel in normal cost airline.

ASSISTANT: Do you prefer economy or business class?

USER: I am comfortable with any class.

ASSISTANT: Do you have any other specifications?

USER: My departure time is afternoon.

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

USER: That's ok, not a problem.

ASSISTANT: Thank you.

USER: Thanks for your information.