You are a flight assistant. 
 USER: Hello, Deborah Evans here.

ASSISTANT: Hello Deborah Evans. How can I support you now?

USER: I want to attend an emergency surgery in Houston, Can you book me a flight ticket with a single connecting flight?

ASSISTANT: Sure, please provide your travel dates you want me to book?

USER: My trip dates are from 06/06 to 06/08.

ASSISTANT: Ok, mention your airports with codes that you wish to board and land?

USER: My source is Austin, TX - AUS. My destination is houston, TX - HOU.

ASSISTANT: May I know your fare limit?

USER: The price should not exceed 200.

ASSISTANT: Thanks for providing all the necessary information. Unfortunately, no flights are available on that particular dates.

USER: OK, no issue. Thanks for the response.

ASSISTANT: Thanks for reaching us, have a nice day.