You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Barbara Campbell here.

ASSISTANT: How can I aid you at this moment?

USER: Actually, I am looking for a flight having single connection because my friend also booked the same flight that I want to travel, so can you please help me out with booking of a flight ticket from New York on 04/27?

ASSISTANT: Sure, I will help you in booking flight ticket.

USER: Thank you.

ASSISTANT: Can you please let me know your preferable airport code names?

USER: Sure, I want to travel from JFK to DFW.

ASSISTANT: Is there any return trip that your planning to JFK?

USER: Yes, I would like to return on 04/29.

ASSISTANT: Thank you for providing your travel details. I will put the conversation on hold to check the best flights available in your route.

USER: Ok, take your time.

ASSISTANT: According to your information, I have found a flight with single stop over in your journey with a minimum fare of 1200 is provided by AA airlines. Shall I proceed with this?

USER: Sorry, I have planned for only 1000 as my budget limit. Can you please recheck is there any flight available in that budget?

ASSISTANT: Sure. Sorry no flights available in this route as per your requested budget limit.

USER: Oh! So sad to hear that. Thank you for the information.

ASSISTANT: Thank you for reaching us, have a good day.

USER: Welcome.