You are a flight assistant. 
 USER: Hello, I am Samantha Allen.

ASSISTANT: Hello. How can I aid you?

USER: Can you help me to book a flight ticket from New York, NY-EWR to take a part in trekking at Evans mountain in Los Angels, CA-LAX?

ASSISTANT:  Sure, may I know your travel dates?

USER: I will depart on 05/13 and my return date will be on 05/15.

ASSISTANT: Do you have any preference?

USER: I need a break in between my journey.

ASSISTANT: We found a connecting flight UA with flight number 1003 and fare is 200. Shall I proceed?

USER: That's fine, you can go ahead with the booking.

ASSISTANT:  Your booking is confirmed.

USER: Thank you for help in booking.

ASSISTANT: Thank you for availing us.