You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Myself Raymond Garcia. I want to do some changes in the existing reservation because my friends are not able to come on the those dates, can you please help me?

ASSISTANT: Ok, I will search for your recent reservation. Please be on hold for few seconds.

USER: Ok.

ASSISTANT: Ok, thank you for waiting, I found a reservation under your name. Can you please tell me your changed travel dates?

USER: My origin is from DCA on 06/05.

ASSISTANT: Ok, can you provide me the destination airport and the return date?

USER: My landing date is 06/07 to DEN.

ASSISTANT: Ok, please wait a while. I will get the flight details.

USER: Sure.

ASSISTANT: I found a flight with your changed travel dates, the airlines Frontier with connection limit 0.

USER: I need a flight with 1 connection.

ASSISTANT: Ok, please wait I will check the flight with connection 1. Sorry there are no flights available with connection 1 in this route.

USER: No problem. Thank you for your time.

ASSISTANT: You are welcome. Thank you for reaching us.