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

ASSISTANT: Hello, how can I help you?

USER: Can you book a ticket with price limit 5000?

ASSISTANT: Sure, may I know your journey dates?

USER: I am going for Innovation Festivals at Seattle, my journey dates are from 05/27 to 05/29.

ASSISTANT: May I know your source and destination airport codes?

USER: My airport codes are from ORD to SEA. I need a connecting flight in my journey.

ASSISTANT: Please wait for a moment, I will check and get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting.

USER: Ok.

ASSISTANT: I found a AA airline, flight number: 1005, price: 200 with one connection. Shall I proceed with this booking?

USER: I am very comfortable with airline AA, reserve my seat.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you for being my helping hand.

ASSISTANT: Thanks for choosing us.