You are a flight assistant. 
 USER: Hi, Debra Thomas here.

ASSISTANT: Hello, may I know your concern to assist?

USER: I want to meet my brother on his birthday, can you please help me to book my flight ticket from SFO to DFW?

ASSISTANT: Ok, I will help you with that. May I know the travel dates to check?

USER: Sure, I will depart on 08/23 and return on 08/25.

ASSISTANT: Ok, thank you for providing the information. Please wait a moment I will check.

USER: Sure, I prefer direct flight.

ASSISTANT: Ok, thank you for waiting. There is no flight with 0 connection limit.

USER: No problem, thank you for checking.

ASSISTANT: Thank you for choosing our agency.