You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I need a flight in an economy class to Seattle from my location Oakland in the month of October. Can you assist me in booking my flight ticket?

ASSISTANT: Sure, may I know your travelling airport codes?

USER: Sure, my travelling dates are Oct 4 and Oct 6.

ASSISTANT: Please mention your airport codes?

USER: ok, my airport codes are OAK and SEA.

ASSISTANT: May I know your specifications?

USER: Yes, I need a flight in a normal-cost airlines.

ASSISTANT: Please wait a moment, let me check best flight for your journey.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry, there are no flight tickets available with your requirements. May I know your name?

USER: No problem, anyways thank you for the information and my name is Christine Turner.

ASSISTANT: Thank you for reaching our service.