You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Amy Rodriguez 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 09/11?

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

USER: Thank you.

ASSISTANT:  Could you please mention your preferable airport code names?

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

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

USER: Yes, I would like to return on 09/13.

ASSISTANT: Please give me a moment, I will check flight availability in this route.

USER: Sure, take your time. But make sure that flight should be with in the fare of 500.

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

USER: Oh! So sad to hear that. Anyway, I will choose another airlines to go there. Thank you for the information.

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