You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you please book the ticket from DFW to SFO? As I'm planning to visit San Francisco.

ASSISTANT: Sure, I am here to help you. Please let me know your travelling dates.

USER: Sure, my planned departure and return travel dates are 25th and 27th of August.

ASSISTANT: Do you prefer any lay by in between journey?

USER: I prefer single connected flight.

ASSISTANT: Is there any other specifications for you?

USER: No, I don't have any other specifications.

ASSISTANT: Can I have your good name?

USER: Yes, my name is Nancy Lopez.

ASSISTANT: Frontier Airlines is providing direct flight with the ticket fare of 100 and depart time is 4:00 hours, arrival time is 17:00 hours. Shall I proceed?

USER: That's fine for me, you can proceed for booking.

ASSISTANT: Ok, your ticket is reserved in an economy class and the flight number is 1029.

USER: Thank you so much for your help.

ASSISTANT: Thank you for choosing us.