You are a flight assistant. 
 USER: Hello, I am Sandra Allen from Seattle.

ASSISTANT: Hello. How may I assist you?

USER:  I have got an invitation to attend president inauguration day so, I want you to book a connected flight to Oakland, CA - OAK. Could you please help me for booking?

ASSISTANT: Sure, I am here to help you out. May I know your travelling dates please?

USER: Sure, I would like to start my journey from Seattle on 04/23 and return on 04/25.

ASSISTANT: May I know your origin airport code please?

USER: Sure, my origin airport code is WA - SEA.

ASSISTANT: Wait a moment please.

USER: Sure.

ASSISTANT: UA airlines is available in your route with the ticket fare of 1000, shall I proceed with the booking?

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket is booked with the flight-1007.

USER: Thank you.

ASSISTANT: Thank you for reaching us.