You are a flight assistant. 
 USER: Hi, I am Thomas Martinez.

ASSISTANT: Hello. How may I aid you today?

USER: I need to book a connecting flight from Houston to attend a live concert at Austin. Can you help me with the booking?

ASSISTANT:  Sure, we are here to make your journey comfort. Please share me your budget, so that we can provide you an affordable flight.

USER: 200 is my price limit.

ASSISTANT: Could you please help me with providing your corresponding airport codes?

USER: My airport codes are IAH and AUS.

ASSISTANT: When are you planning to make your journey?

USER: I would like to fly on 01/19 and 01/21.

ASSISTANT: Thank you for providing your details, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, unfortunately there are no flights found with your essential details.

USER: It's ok, thank you for the response.

ASSISTANT: Thank you for availing us.