You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Myself Michelle Robinson, can you help me to book a flight ticket from HOU to ATL?

ASSISTANT: Sure, please help me with your planned journey dates.

USER: Ok, my depart date is 02/05 and return date is 02/07.

ASSISTANT: Please wait a moment, I will check the availability of flights.

USER: Ok, take your time.

ASSISTANT: Thank you for your patience, I found a flight for you in JetBlue airlines with price 900. Can I book your ticket?

USER: Can you check for the lower price range of 500?

ASSISTANT: Sure. Michelle, no flights has been found on your preferences.

USER: That's ok. Thank you for the information.

ASSISTANT: Thank you for choosing us.