You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know how best I can help you today?

USER: I am planning to visit Chicago, can you please book me a ticket from IAH to ORD?

ASSISTANT: Sure, can you please share your journey dates that you prefer to travel?

USER: I want to depart on Sept 24 and would like to return on Sept 26.

ASSISTANT: There is a connected flight in JetBlue airlines with the fare 100.

USER: Please book my ticket in this flight.

ASSISTANT: Your booking the done.

USER: Please provide flight number.

ASSISTANT: 1020 is your flight number.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you.