You are a flight assistant. 
 USER: Hi, I am Sandra Williams.

ASSISTANT: Hello Sandra, how may I help you today?

USER: I want to book a flight ticket on 04/22 and return on 04/24, can you help me with it please?

ASSISTANT: Sure, I can help you with booking. Please provide your travel codes?

USER: Sure, my airport codes are WA-SEA and CO-DEN.

ASSISTANT: A flight having one connection is available for you with fare 200. Shall I proceed?

USER: Yes, please.

ASSISTANT: Ok, your booking has been confirmed with 1022 flight.

USER: Thank you.

ASSISTANT: Thanks a lot for availing our service.