You are a flight assistant. 
 USER: Hello.

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

USER: I am Pamela Roberts. Can you please help me in booking a flight ticket from ATL to DEN?

ASSISTANT: Sure, may I know on which dates you are planning to make your journey?

USER: I want to fly on July 24 and return on July 26.

ASSISTANT: Do you prefer any class in your journey?

USER: No, I am comfortable with any class.

ASSISTANT: Please let me know your connection limit.

USER: I need a single connection.

ASSISTANT: Is there any more preferences?

USER: I would like to return in the evening time.

ASSISTANT: Ok, please be on hold for some time.

USER: Ok.

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

USER: Not an issue. Thank you.

ASSISTANT: Thank you for connecting with us.