You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Nicholas Harris.

ASSISTANT: How can I assist you?

USER: I am looking for a flight from IAH to ORD, can you help me out?

ASSISTANT: Ok, may I know your travelling dates?

USER: My trip dates are from 11/22 till 11/24.

ASSISTANT: Here is a single connection flight with 1023 as flight number and fare is 800. Shall I proceed with booking?

USER: I can afford only 200, can you check with it?

ASSISTANT: Sorry, no flights found on your route with 200 fare.

USER: That's ok, no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.