You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am William Robinson. I have to attend the final examination in San Francisco, can you please help me to book a flight ticket from Houston?

ASSISTANT: Sure, We are here to help you. On what dates you want me to book the ticket?

USER: Thank you for your positive response. I want to depart on the date of Jan/18 and returning on the date of Jan/20.

ASSISTANT: Could you please share your exact airport codes?

USER: The nearest airports to my desired locations are IAH and SFO.

ASSISTANT: Are you okay with connecting flight or you need a direct flight?

USER: I prefer to travel in a single connecting flight. So, please provide the flight with the maximum connection of 1.

ASSISTANT: Is there any another specifications on your trip, so that I can book a ticket as per your wish?

USER: No, I didn't have any idea about other preferences. Provide me the flight details, so that I will confirm you to book the ticket or not.

ASSISTANT: Let me check the availability of flights and revert to you.

USER: Ok, I can wait for your reply.

ASSISTANT: We found a economy class ticket in Spirit airline with flight number-1007.

USER: Ok, that's fine. Please go ahead and reserve the flight ticket for me.

ASSISTANT: Your ticket has been confirmed with the connecting flight and your depart time will be in the afternoon.

USER: I am happy for the help you have done for me. Thanks a lot for that.

ASSISTANT: Thank you for approaching us.