You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Paul Adams.

ASSISTANT: Adams, how may I assist you at this moment?

USER: Can you help me to book a flight ticket?

ASSISTANT: Sure, I will help you in booking, please share your travelling airport codes?

USER: My travelling airport codes are SFO and AUS.

ASSISTANT: When you are going to start your journey and please share your return date also if you require?

USER: I would like to fly on 11/01 and 11/03.

ASSISTANT: Do you have any requirements?

USER: Sure, my price limit for this trip is 200.

ASSISTANT: Sorry for the inconvenience, no flights due to heavy bookings.

USER: Ok, no issues. I will check with other agency. Thank you for your information.

ASSISTANT: Thank you for reaching us.