You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to travel from IAH to SFO. Can you book a flight ticket for me?

ASSISTANT: Sure, I am here to help you for this. Could you please share me your requirements?

USER: I want to return in afternoon time.

ASSISTANT: Could you please share me your airport codes?

USER: I want to fly in the flight on Sept 10 and Sept 12.

ASSISTANT: Is there any other credentials?

USER: I am looking for a connecting flight.

ASSISTANT: As per your information, there is a flight with Frontier Airlines and the ticket fare is 100. Would you like me to make the booking now?

USER: Proceed to booking.

ASSISTANT: For reserving the ticket. May I know your name please?

USER: I am Mark Lopez.

ASSISTANT: Your ticket is reserved in economy class with the flight-1011. Your depart time is 21:00 PM and again your arrival time is 19:00 PM.

USER: Thank you for your help.

ASSISTANT: Thank you very much for contacting our agency.