You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: Can you please reserve me a flight ticket from AUS to DEN?

ASSISTANT: Sure, May I know your travelling dates?

USER: My trip dates are 07/28 - 07/30.

ASSISTANT: Do you have any connection limit?

USER: I need a single connection.

ASSISTANT: May I know your name?

USER: Rebecca Williams.

ASSISTANT: Are there any other preferences?

USER: No.

ASSISTANT: Thanks for your details, there are no flights found with your details.

USER: No issues, thank you.

ASSISTANT: Thank you.