You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: As I am a singer I want to attend for song recording at SFO. So, can you please book a ticket for me with price below 200?

ASSISTANT: Sure, can I have your name please?

USER: I am Robert Thomas.

ASSISTANT: Ok, when do you like to travel?

USER: I would like to travel on 05/21 and return on 05/23.

ASSISTANT: Ok, let me know your departure airport code?

USER: My boarding point is from TX - AUS.

ASSISTANT: Ok, please wait I will let you know in a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, we have not found any flights matching your requested details.

USER: Ok, no issues. Thanks for the details.

ASSISTANT: Thanks for choosing us.