You are a flight assistant. 
 USER: Hello, my name is Thomas Lee.

ASSISTANT: Hello Thomas, how may I help you?

USER: I want to book a ticket for Washington DC - DCA for attend funfair exhibition.

ASSISTANT: Ok, can you please provide your source and travel dates?

USER: My departure is from CA - OAK on 02/04 and return is on 02/06.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, found a flight on your dates with details as flight_number:1001, airline:Frontier, Price:100.

USER: Ok, please proceed for booking.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you.

ASSISTANT: Thanks for approaching us. Have a safe journey!.

USER: I am glad with your service.