You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Nicole Parker here.

ASSISTANT: How can I aid you today?

USER: Due to sudden change in my planned date of journey, I would like to change my reservation. Can you please help me out with that?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Please hold on a moment, I will check your reservation status.

USER: Ok, take your time.

ASSISTANT: I have found your reservation. Can you please mention your new preferable travel dates for booking flight ticket?

USER: That's great. I am planning to move on 04/10 and please book my return ticket on 04/12.

ASSISTANT: May I know your preferable airport code names?

USER: Sure, I will prefer DFW and EWR as my origin and destination airport codes respectively.

ASSISTANT: Please hold on a moment, I will check flight availability in this route.

USER: Ok, take your time. Please make sure that flight should be with connection 1.

ASSISTANT: Sure. Sorry no connecting flights available in this route as per your requested dates.

USER: Oh! So sad to hear that. Anyway, thank you for the information.

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

USER: Welcome.