You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you at this moment?

USER: Can you please make a reservation from DEN to DCA to attend a meeting in Denver?

ASSISTANT: Sure, may I know your good name?

USER: My name is Emma Carter.

ASSISTANT: Could you please share your journey dates?

USER: My journey dates are on Jan 5th and 7th.

ASSISTANT: Do you need a lay by in between your journey?

USER: I need  a lay by in between journey.

ASSISTANT: Are there any other specifications?

USER: My return flight time should be in the evening.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there are no flights available as per your requirements.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.