You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you please book a flight ticket from DEN to SFO?

ASSISTANT: Sure, I will help you. Can you please tell me your travel dates?

USER: Thank you. I have planned my travel dates as Jan 12 and Jan 14.

ASSISTANT: What is your good name please?

USER: Sure, myself Elizabeth Perez.

ASSISTANT: Do you have any class preference?

USER: I would prefer economy class to travel.

ASSISTANT: Is there any connection limit preferences?

USER: Yes, I am looking for single connecting flight so please check with that.

ASSISTANT: Ok, please give me a minute.

USER: Sure, take your time.

ASSISTANT: There is a flight in the Spirit airlines which is matching to your requirements and the ticket cost is 300. Can I reserve the ticket?

USER: That is fine, please proceed with booking.

ASSISTANT: I have reserved your ticket with the flight-1003.

USER: Thank you for your help.

ASSISTANT: Have a nice journey. Thank you for choosing us.

USER: Most welcome.