You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I want to change my travel dates in my previous reservation so can you please help me with that?

ASSISTANT: Sure, we are here to help you. Can I have your name?

USER: Thank you for your response. Sure, my name is Carolyn Thompson.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT: We have found a reservation on your name, kindly mention your new journey dates?

USER: I want to take off on June 07 and book my return ticket also on June 09.

ASSISTANT: May I know your airport locations?

USER: I want to fly from DCA and destination airport is SFO.

ASSISTANT: Do you have any specifications to be met?

USER: I need 1 break in between my journey.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT: Thank you for your valuable time, unfortunately no flights available on that route.

USER: It's ok no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.