You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,. How best I can assist you at this moment?

USER: This is thomas thomas. I want to travel to ORD to meet a friend, can you please book a flight ticket from PHL.

ASSISTANT: Sure, can you please forward your journey dates?

USER: My travel dates are in the month of Dec from 27th to 29th.

ASSISTANT: Do you prefer any class in your journey?

USER: I am comfortable with any class.

ASSISTANT: Please mention your connection limit.

USER: I want a single layoff in my journey.

ASSISTANT: Is there any more requirements?

USER: I want to depart in the afternoon.

ASSISTANT: Ok, please stand by.

USER: Sure.

ASSISTANT: We found a United airlines, price is 200 in economy class, your depart time is 16:00 PM. Shall I proceed?

USER: Yes, please proceed.

ASSISTANT: Your ticket has been reserved with 1015 flight number.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.