You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I am Andrew Williams here, I want to reserve my ticket from ORD to LAS, can you please help me in this?

ASSISTANT: May I know your trip dates?

USER: Sure, my planned dates of journey are from Apr, 02 to Apr, 04.

ASSISTANT: Do you prefer any specifications?

USER: Yes, I need a economy class.

ASSISTANT: There is a connected flight in Spirit airlines with the fare 200.

USER: Ok, you can book it.

ASSISTANT: May I know your name?

USER: I have mentioned.

ASSISTANT: Your booking is done. Thank you.

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