You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you at this moment?

USER: Can you please help me to book a flight ticket from DCA to OAK?

ASSISTANT: Sure, I am happy to help you with that. Can I have your travel dates please?

USER: Thank you. I want to travel on the dates of July 22 and July 24.

ASSISTANT: Ok, please let me know the timings of your journey.

USER: No but I need a flight with the maximum connection limit of one.

ASSISTANT: Do you have any other specifications related to your ticket booking?

USER: No, thanks for asking.

ASSISTANT: Can I have your good name please to proceed further?

USER: My name is Carolyn Campbell.

ASSISTANT: Ok, please wait a moment.

USER: Ok, take your time.

ASSISTANT: UA airlines running a flight in your route with connection 1 and the ticket fare is 100 in economy class. Shall I proceed with booking?

USER: I am fine with this flight details, please go ahead and reserve the ticket.

ASSISTANT: Ok Carolyn Campbell, your ticket booking has done and the flight number is 1001.

USER: I am happy for your help. Thank you so much.

ASSISTANT: Thank you for choosing us, have a great journey.

USER: You are welcome.