You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Please book me a ticket from AUS to PHL to meet my family.

ASSISTANT: Sure, kindly share your travel dates.

USER: I have planned to travel on Apr 16th and return on Apr 18th.

ASSISTANT: Do you have any connection preference?

USER: I prefer connecting flight.

ASSISTANT: Is there any other specifications?

USER: I like economy class.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry, we don't have any seat left in our economy class flight to process.

USER: Ok, no problem.

ASSISTANT: Please share your name.

USER: Thank you. Myself Nancy Turner.

ASSISTANT: Thanks for reaching us.