You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Elizabeth Allen here.

ASSISTANT: Allen, how can I aid you today?

USER: I want to reserve my ticket from PHL to DEN, can you please help me out?

ASSISTANT: Sure, I am here to help you. May I know your travel dates please?

USER: Sure, my planned dates of travel are from 09/27 to 09/29.

ASSISTANT: Ok, hold on for a moment. Let me check the best flight for you.

USER: Sure, I will wait.

ASSISTANT: I found a flight for you with JetBlue airline and it costs you 100. Shall I proceed?

USER: Ok, please book it.

ASSISTANT: Your ticket has been booked with 1004 flight number.

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

ASSISTANT: Welcome.