You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Barbara Carter. I have to reach Chicago to meet my friend so please help me with flight ticket booking from Philadelphia.

ASSISTANT: Sure, please provide your travel dates.

USER: Sure, I have planned to travel on dates of Apr 21 and Apr 23.

ASSISTANT: Do you have any preferences?

USER: Yes, I would like to depart in the afternoon time only.

ASSISTANT: Do you have any other requirements?

USER: I am ok with single connection but even direct flight is also fine.

ASSISTANT: Do you have any airline preferences?

USER: I am ok with any airlines.

ASSISTANT: Flight-1023 is available in AA airlines with single connection an the flight  fare is 100. Can I proceed?

USER: That is fine, please proceed with booking.

ASSISTANT: Your booking is confirmed.

USER: Thank you for your help.