You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Could you please help me to book a flight ticket from CA to meet my old friend to start a new business in Seattle?

ASSISTANT: Yes, can you tell me your dates of travel?

USER: Sure, 08/19 and 08/21 are my planned travelling dates.

ASSISTANT: Can I know your nearest airport codes?

USER: My boarding and landing airport codes are SFO and SEA.

ASSISTANT: Do you have any other preferences?

USER: I want to fly in a connecting flight.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: I have found an economy class ticket with a price of 100 and 1 connection.

USER: Ok, please proceed with the booking.

ASSISTANT: Can I know your name for booking?

USER: I am Alexander Nelson.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your help in booking.

ASSISTANT: Thank you for reaching us.