You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I would like to prefer a flight with lay-by option for my business trip to Denver. Can you book the flight ticket?

ASSISTANT: Sure, let me know your trip dates please?

USER: The trip dates are from 10 May to 12 May.

ASSISTANT: Could you please share me your source airport code?

USER: The airport codes are from HOU to DEN.

ASSISTANT: Do you need any other preference?

USER: No\.

ASSISTANT: Can I know your name please?

USER: I am Jessica Perez.

ASSISTANT: American Airlines is providing ticket in economy class. Shall I proceed with booking?

USER: I am fine with the airlines. You can book it.

ASSISTANT: Your ticket is confirmed.

USER: Thank you.

ASSISTANT: Thank you for reaching us.