You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I serve you?

USER: My name is Melissa Carter. I am planning to visit a Space Needle in Seattle, so please book a connecting flight for me.

ASSISTANT: Sure. May I know your travelling dates?

USER: I want to start on 09/15, return on 09/17.

ASSISTANT: Can you share me your airport codes?

USER: My source and destination airport codes are CA - SFO, WA - SEA.

ASSISTANT: There is a flight 1004 in JetBlue airline and price 200 with a connection. Shall I proceed?

USER: Yes, please.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you.