You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you now?

USER: I would like to meet my friend on his birthday at Oakland, please help me in booking a ticket from SEA to OAK.

ASSISTANT: Sure, I will help you with that. Can you please provide your preferable dates of travelling?

USER: I would like to plan my journey on Jan 4 and return on Jan 6.

ASSISTANT: On whose name I have to book the flight ticket?

USER: My name is Anthony Johnson.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight for my trip.

ASSISTANT: Any more specifications do you have?

USER: I prefer normal-cost airlines.

ASSISTANT: Please wait a moment to check the flights.

USER: Sure, take your time.

ASSISTANT: Unfortunately there are no flights running on your route with your required preferences.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for approaching us, have a great day.