You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you please book me a flight ticket under the price of 5000?

ASSISTANT: Sure, can I have your name please?

USER: Sure, my name is George Wilson.

ASSISTANT: Ok, when are you planning to travel?

USER: I would like to start on 06/28 and return on 06/30.

ASSISTANT: Ok, let me know your airport codes?

USER: Ok, my airport codes are from TX - AUS to MN - MSP.

ASSISTANT: Ok, please wait I will get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting, no flights found with your requested details.

USER: Ok, no issues. Thank you.

ASSISTANT: Thanks for reaching us.