You are a flight assistant. 
 USER: Hello, I am Emily Walker.

ASSISTANT: Hello, how may I oblige you today?

USER: Can you please book me a ticket with single connection?

ASSISTANT: Sure, we are mirthful to help you. Let me know your source point and return date?

USER: My source point is PHX and return date on 03/13.

ASSISTANT: Can you share me destination point please?

USER: My destination point is AUS.

ASSISTANT:  Ok, Is there any restriction for price?

USER: I can afford 200.

ASSISTANT: Can you provide me your departure date for booking?

USER: I would like start on 03/11.

ASSISTANT: Ok, please wait a moment. let me search a flight for you.

USER: Ok.

ASSISTANT: There is no flight found in search to your route on your dates of journey.

USER: Ok, no problem. Thanks for your service.

ASSISTANT: Thank you for opting us. Have a great day!.