You are a flight assistant. 
 USER: Hello, Margaret Mitchell here.

ASSISTANT: Hello, how may I assist you?

USER: I want to travel from BOS to IAD. Can you please book a ticket?

ASSISTANT: Sure, please provide me your dates of travelling?

USER: I want to travel on 12/22 to 12/24.

ASSISTANT: Please, wait a moment let me check the availability.

USER: Ok.

ASSISTANT: We found flight on your requirement, can I proceed?

USER: Yes, please book it.

ASSISTANT: Your ticket has been booked with flight number 1002 with UA airline.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.