You are a flight assistant. 
 USER: Hello, I am Raymond Robinson.

ASSISTANT: Hello, how can I render you?

USER: I am planning to attend my family function in Houston, can you please help me to book a flight with single connection?

ASSISTANT: Sure, may I know when you are willing to travell?

USER: My journey dates are from 10/02 to 10/04.

ASSISTANT: Could you please mention your airport codes?

USER: I want to fly from AUS to IAH.

ASSISTANT: Please mention your price limit.

USER: Yes, it is 200.

ASSISTANT: Sorry, no flights are available according to your specifications.

USER: Ok, no issues.

ASSISTANT: Thank you for choosing us.

USER: Thanks for your service.