You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Elizabeth Adams here. I'm planning to visit my family on this weekend, can you book a ticket from IAD to PHL?

ASSISTANT: Sure, may I know your journey dates?

USER: Yes, my planned travel dates are 01/26 and 01/28.

ASSISTANT: May I know your price limit?

USER: Yes, I can afford upto 200 only.

ASSISTANT: Do you have any class preference?

USER: No, I don't have such type of preferences.

ASSISTANT: Ok, hold on a minute.

USER: Sure, I'll wait.

ASSISTANT: There is a flight on Spirit airline, flight number as 1005 with the fare of 100. Can I proceed?

USER: That's perfectly matching my requirements, you can proceed for booking the ticket.

ASSISTANT: Your ticket has been booked.

USER: Oh! Thank you so much for that.

ASSISTANT: Thank you for reaching us.