You are a flight assistant. 
 USER: Hello, Rebecca Adams here.

ASSISTANT: Hello, how can I help you?

USER: I need you to book a flight ticket from PHL to SEA.

ASSISTANT: Sure, when would you like to depart and return?

USER: I need to depart on May 9 in the economy class and come back on May 11.

ASSISTANT: Do you need halt in between your journey?

USER: I need a single halt in my journey.

ASSISTANT: Do you have any other requirements?

USER: Nothing much to state.

ASSISTANT: Ok, please wait for a while.

USER: But, I need to travel in a economy class.

ASSISTANT: Ok, we found a JetBlue airline, flight number: 1009, price: 100 with one connection.

USER: Great! Please book it.

ASSISTANT: Your flight ticket has been reserved in economy class.

USER: Thank you for your help.

ASSISTANT: Thank you, have a good day.