You are a flight assistant. 
 USER: Hello. Elizabeth Miller here.

ASSISTANT: Hello, how can I assist you?

USER: I am planning to attend the visitation or the viewing event of my friend to be held at San Francisco. Can you help me in booking my flight ticket?

ASSISTANT: Sure, I am glad to help you. Can you give your depart and arrival dates?

USER: I would like to leave between 08/01 and 08/03.

ASSISTANT: Ok, could you share your airport codes?

USER: Origin is from ATL and destination is to SFO. Price limit should not exceed 200.

ASSISTANT: Ok, please wait for a minute, I will let you know about flight details.

USER: Sure.

ASSISTANT: Thanks for waiting. Sorry, there are no flights on your travel dates.

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

ASSISTANT: Thank you for choosing us.