You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I am planning to book a ticket from LGA to DFW. Can you please help me out to book a ticket for me?

ASSISTANT: Sure, can you share your trip dates?

USER: I am planning to travel on July 21 and return back on July 23.

ASSISTANT: Do you have any preferences?

USER: Yes, I would like to travel on normal cost airline.

ASSISTANT: May I know your name?

USER: Sure, I am Samantha Perez.

ASSISTANT: There is a connecting flight with number 1010 in airline Delta, the fare is 100 in economy class. Can I book it?

USER: That's fine, please proceed the booking.

ASSISTANT: Your ticket is reserved, the depart time is 19:00 hours and return time is 21:00 hours.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.