You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. In which way I can aid you today?

USER: I am Mary Martin, want to alter my reservation dates. Can you please help me?

ASSISTANT: Sure, I will aid you with that. Please wait a moment, I will check your previous reservation status.

USER: Ok.

ASSISTANT: I have found your reservation. Can you please mention your preferable travel dates?

USER: My travel dates are from 04/25 to 04/27.

ASSISTANT: May I know your airport code names for further process?

USER: My airport codes are from EWR to DCA.

ASSISTANT: Is there any additional preferences do you have?

USER: No.

ASSISTANT: Hawaiian airline is ready to serve you with 1 connection with a minimum fare of 100 is available for you. Shall I confirm this economy class flight ticket?

USER: Please book it.

ASSISTANT: I have changed your reservation successfully, flight number is 1003.

USER: Thank you.

ASSISTANT: You are welcome.