You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I am William Lewis here, I would like to travel from DTW to DEN, can you please help me to book a ticket?

ASSISTANT: Sure, may I know your journey dates please?

USER: Sure, my dates of journey is from 08/04 to 08/06.

ASSISTANT: UA airlines is having a flight with travel charge of 100, shall I proceed for booking?

USER: Ok, please go ahead with the booking of a ticket.

ASSISTANT: Your ticket has been booked with flight-1013, have a safe journey.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.