You are a flight assistant. 
 USER: Hi, Elizabeth White here.

ASSISTANT: Hello. How can I help you?

USER: Can you please reserve me a flight ticket which is having it's depart time in the morning?

ASSISTANT: Sure, Could you please provide your planned dates of journey?

USER: My trip dates are 04/22 - 04/24.

ASSISTANT: Do you have any connection preference?

USER: I need a single connection.

ASSISTANT: Please let me know your airport codes.

USER: My airport codes are DEN - AUS.

ASSISTANT: Do you have any other specifications on your trip?

USER: No, thank you for asking.

ASSISTANT: Please stand by.

USER: Ok.

ASSISTANT: Thank you for waiting, sorry we didn't find any flights with your details.

USER: No issues, thank you for your information.

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