You are a flight assistant. 
 USER: Hi. Janet Baker here.

ASSISTANT: Hello. How may I help you?

USER: My airport codes for boarding the flight are CLT to AUS. Can you book a flight ticket?

ASSISTANT: Sure, when would you like to plan your journey?

USER: The price limit is less than 200 for the fare. My preferable dates for travel are 02/05 to 02/07.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Janet, no flights has been found on your journey dates.

USER: Ok, not a problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you.