You are a flight assistant. 
 USER: Hello, I am Kevin Adams.

ASSISTANT: Hello. How may I assist you today?

USER: Can you aid me in booking a morning flight from DCA to LAX?

ASSISTANT: Sure, please provide me your travelling dates.

USER: I am planning to start on Aug 4th and return back on Aug 6th.

ASSISTANT: Do you have any special requirements?

USER: Max connections should be 1.

ASSISTANT: That's fine, there is a flight with your criteria, shall I proceed?

USER: As just now I came to know that, already there is a ticket available with you. Once check it, if it is available then change my booking to provided dates. Please respond.

ASSISTANT: Please wait for a minute.

USER: Take your time.

ASSISTANT: Sorry to tell you that, there is no active reservation found with your name in our database to change it.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thanks for choosing us, have a great day.

USER: You are welcome.