You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: We are planning to go Washington IAD to participate in the event of fashion designer with my colleagues from New York JFK. Can you please help me with the booking?

ASSISTANT: Can I know your name?

USER: I would like to book this flight ticket under the name of Christopher Williams.

ASSISTANT: Do you have any specification?

USER: I am looking for a flight with single connection.

ASSISTANT: Please provide your travelling dates.

USER: I want to depart on Jan 11 and need to return on Jan 13.

ASSISTANT: Found ticket with Spirit airlines for price 100 having flight number 1017.

USER: Ok, please proceed.

ASSISTANT: Ticket is booked.

USER: Thank you.

ASSISTANT: Thank you.