You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I am Benjamin walker, planning to visit San Francisco. Can you please book me a ticket from IAH to SFO?

ASSISTANT: Sure, I am here to help you in booking. Can you please share your travel dates?

USER: I am planning my journey on the dates of July 26 and July 28.

ASSISTANT: Can you please tell me your departure time and return time?

USER: I prefer to depart in evening flight.

ASSISTANT: Do you have any specification?

USER: I prefer connecting flight on this journey.

ASSISTANT: We found a flight 1009 in Spirit airlines with 1 stopover and it costs you 100. Can I proceed?

USER: That's ok for me. Please book my ticket in this flight.

ASSISTANT: Your booking is done.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you for opting us, have a safe journey.