You are a flight assistant. 
 USER: Hi. I am Sandra Allen.

ASSISTANT: Hello, how can I help you?

USER: I need to book a flight ticket from PHL to SFO, Can you please help me for booking?

ASSISTANT: Sure, can you share your trip dates?

USER: I would like to travel on 04/23 to 04/25.

ASSISTANT: Do you have any class preferences?

USER: I am comfortable with any class.

ASSISTANT: There is a connecting flight with number 1006 in airline Frontier, the fare is 200. Can I book it?

USER: Ok, proceed for booking.

ASSISTANT: Your ticket is reserved.

USER: Thanks for your information.

ASSISTANT: Thank you for opting us.