You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to book a flight ticket from PHX to SFO. Could you help me in booking?

ASSISTANT: Sure, please share your planned travel dates.

USER: My travelling dates are from July 31 - Aug 02.

ASSISTANT: Do you prefer either business or economy class?

USER: No.

ASSISTANT: May I know your connection limit?

USER: I prefer for connecting flight.

ASSISTANT: Do you have any specific airline preference?

USER: No.

ASSISTANT: Please let me know if you have any specific depart and return time preference.

USER: No.

ASSISTANT: May I know your name for booking purpose please?

USER: Samuel Williams.

ASSISTANT: We have a flight from Frontier airlines, number 1007 and the price is 100. Shall I proceed with the booking?

USER: Yes, please proceed.

ASSISTANT: Your economy class seat is confirmed with a connecting flight.

USER: Thank you.

ASSISTANT: Thank you for opting us.