You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Nicholas Martinez.

ASSISTANT: How may I guide you?

USER: I have to attend a meeting with President at Washington. Can you help me in booking a ticket?

ASSISTANT: May i know your travelling dates please?

USER: My planned journey dates are 08/13 and 08/15.

ASSISTANT: May I know your airport codes please?

USER: My journey starts from IAD to IAD.

ASSISTANT: I found a flight for you in JetBlue airlines with price 100. Can I proceed?

USER: Please book the ticket for me.

ASSISTANT: Ok, your booking is confirmed with flight number 1011.

USER: Thank you for your service.

ASSISTANT: Thank you for approaching us.