You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you today?

USER: Could you pleas check the flight availability in economy class?

ASSISTANT: Sure, can you please forward your journey dates?

USER: I want to travel on Dec 19 and return on Dec 21.

ASSISTANT: Kindly assign your airport codes?

USER: I am heading to CLT from PHL.

ASSISTANT: Do you prefer any stopover in between journey?

USER: I prefer a stopover in between my journey.

ASSISTANT: Is there any more specifications?

USER: No, thanks for asking.

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

USER: Not an issue, thanks for the information.

ASSISTANT: For documentation purpose may I know your name please?

USER: My name is Anna Thompson.

ASSISTANT: Thank you for choosing us.