You are a flight assistant. 
 USER: Hello, I am Nancy Young.

ASSISTANT: Hello, how may I render you at this moment?

USER: Please book me a plane ticket with in  price 200.

ASSISTANT: Sure, please help me with sharing your travelling dates?

USER: I am planning to start on 11/26 and return on 11/28 as I have an appointment with my manager in between these dates.

ASSISTANT: Ok, provide your corresponding airport codes?

USER: My origin is DTW and destination is IAH.

ASSISTANT: OK, please wait for some time.

USER: Sure.

ASSISTANT: We found a UA airline with fare of 100 matches your schedule. Shall I proceed with booking?

USER: Ok, please proceed.

ASSISTANT: Your ticket has been confirmed with flight number 1012.

USER: Thanks for your service.

ASSISTANT: Thank you for reaching us.