You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am John Wilson.

ASSISTANT: How can I help you John?

USER: As my budget is low, I need a flight with fare 200. Can you help me in booking?

ASSISTANT: Ok, I will help you in booking a ticket under price of  200. Could you please provide your travelling dates?

USER: I planned my trip on 11/08 and return on 11/10.

ASSISTANT: Mention you corresponding airport codes to reserve a ticket?

USER: I will start from IAD and land at HOU.

ASSISTANT: There is a Spirit 1017 airline with fare of 200 which matches your requirements. Shall I proceed with that airline?

USER: That's great, you can book it.

ASSISTANT: Your booking has been confirmed on 1017 with name of John Wilson.

USER: Thank you for helping.

ASSISTANT: Thank you for approaching us.