You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Donna Walker here.

ASSISTANT: How may I help you?

USER: I am a journalist, I have to interview a celebrity at Washington. Please book my ticket from PHX to IAD.

ASSISTANT: Please let me know your travelling dates?

USER: Ok, my itinerary dates are 04/21 and 04/23.

ASSISTANT: Connecting flight can be booked with airline JetBlue for price 100. Shall I book a ticket?

USER: Ok, please proceed for booking.

ASSISTANT: Ticket is booked with flight number 1010.

USER: Thank you for your help.

ASSISTANT: Thanks.