You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I am Alexander Hernandez here, I want to reserve my ticket from DFW to ORD, can you please help me?

ASSISTANT: Sure, please provide me your planned travel dates.

USER: Sure, my preferable dates of journey are from Dec, 10 to Dec, 12.

ASSISTANT: Please let me know if you have any preference.

USER: Yes, I need a connecting flight.

ASSISTANT: Thank you for the details, we have a connecting flight from AA airline, flight number 1008 and the price is 100. Shall I proceed with the booking?

USER: Ok, you can book it.

ASSISTANT: You ticket is booked in economy class.

USER: Thank you for your help in booking my ticket.

ASSISTANT: Thank you for opting us.