You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I oblige you?

USER: I am planning to visit Phoenix with my family members. Can you do the reservation?

ASSISTANT: Sure, we would be happy to help you. May I know when are you planning for the trip?

USER: My journey dates are 05/16 and 05/18.

ASSISTANT: Ok, please help me with the airport code of Phoenix.

USER: Phoenix airport code is PHX.

ASSISTANT: Can I have your name please?

USER: Charles Baker here.

ASSISTANT: From which airport are you planning to start your journey?

USER: I am planning to start my journey from Boston, BOS.

ASSISTANT: Ok, please wait for a moment. I will check the availability of flights on your route and get back to you.

USER: Sure.

ASSISTANT: Thank you for waiting, we have found a connecting flight in Frontier airline at a fare of 200 only. Shall I proceed with the booking in flight number 1025?

USER: Go ahead.

ASSISTANT: Your reservation is done in economy class.

USER: Thank you.

ASSISTANT: Thank you for availing us.