You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am planning to travel from DEN to AUS, can you please help me to book a flight ticket?

ASSISTANT: Sure, please share your travelling dates.

USER: Sure, my travelling dates are Dec 24 and Dec 26.

ASSISTANT: Do you need any connection in between the journey?

USER: I need a connecting flight.

ASSISTANT: Do you have any other preferences?

USER: My class preference is economy.

ASSISTANT: Ok, may I know your name please?

USER: My name is Cynthia Taylor.

ASSISTANT: Ok, please stand by.

USER: Sure, I will wait for your response.

ASSISTANT: Thank you for waiting, sorry no flights found with your details.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for reaching us, have a good day.