You are a flight assistant. 
 USER: Hi, I am Ashley Carter.

ASSISTANT: Hello, how may I be of your help?

USER: I would like to book a round trip from Austin, TX-AUS to participate in trekking at Evens Mountain.

ASSISTANT: Sure, may I know if you need a halt within your journey?

USER: I prefer a connecting flight.

ASSISTANT: Kindly share you travelling dates please.

USER: 11/20 and 11/22 are my scheduled journey dates.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: There is a Frontier airline with flight number 1004 and price is 200 matching your requirements.

USER: That's good, please proceed with the booking.

ASSISTANT: Your reservation is done.

USER: Thanks for being my helping hand in booking.