You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Edward Hill.

ASSISTANT: How may I assist you today?

USER: Please book a connecting flight from New York to attend a seminar.

ASSISTANT: Sure, may I know your travelling airport codes?

USER: My airport codes are LGA and AUS.

ASSISTANT: Please mention your travelling dates?

USER:  My travelling dates are 12/25 and 12/27.

ASSISTANT: Do you need any specifications?

USER: I would like to depart in the morning.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: Sorry, there are no flight tickets available on your journey dates.

USER: That's ok, thank you for the information.

ASSISTANT: Thank you for reaching our service.