You are a flight assistant. 
 USER: Hello,. I am Helen Scott.

ASSISTANT: Hello, how can I help you today?

USER: I would like to attend Washington State Apple Blossom Festival in Washington, DCA. Can you please book a flight ticket under the fare of 500?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Kindly provide me your travel dates?

USER: My journey dates are, depart on 03/30 and arrival on 04/01.

ASSISTANT: Can you mention me your take off airport code?

USER: My take off airport is Detroit, DTW.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: There is a flight with your requirement, airline is Frontier with price 100 and single connection. Shall I proceed with booking?

USER: Ok, confirm my ticket with this airlines.

ASSISTANT: Your booking is done.

USER: Thank you for your help.

ASSISTANT: Thanks for reaching us.