You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Donald Walker.

ASSISTANT: How may I help you today?

USER: I want to book a flight ticket from SEA to OAK. Could you help me in booking?

ASSISTANT: Sure, I can help you with that. May I know your planned departure and return travel dates please?

USER: My travelling dates are from 05/15 to 05/17.

ASSISTANT: Southwest airlines is having a flight on that route with ticket fare of 200, shall I proceed for booking?

USER: Yes, please proceed.

ASSISTANT: I have successfully booked your ticket with flight-1001, have a safe journey.

USER: Thank you.

ASSISTANT: Thank you for reaching us.