You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Timothy Roberts.

ASSISTANT: Yes, Timothy.

USER: I want to visit Twin Peaks which is a popular park with views of the bay area, so I want to book a ticket from Seattle.

ASSISTANT: That's good. Can you please tell me your nearest airport codes?

USER: My nearest airport is SEA in Seattle.

ASSISTANT: May I know your destination code?

USER: My departure airport code is SFO.

ASSISTANT: Kindly mention your travelling dates?

USER: I am departing on 01/20 and return on 01/22.

ASSISTANT: Ok Roberts, just wait a moment. Let me check the availability for you.

USER: Ok.

ASSISTANT: In my search, Delta airlines are providing service on your route with 1 connection. Can I proceed?

USER: Please proceed for booking.

ASSISTANT: Your ticket has been booked with flight 1026.

USER: Thank you for helping me out.

ASSISTANT: It's my pleasure. Thank you for choosing us.