You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, welcome to American Airlines.

USER: I am Anthony Harris.

ASSISTANT: Nice to meet you Harris. How may I assist you today?

USER: Actually, I am planning to visit a San Francisco.Can you please book a ticket  for me.

ASSISTANT: Sure, I will help with that. Which place you want travel in San Francisco, can you mention the airport code?

USER: My starting point is SFO AND reaching point is EWR.

ASSISTANT: Nice, on which dates you want to travel?

USER: I would like to travel on 08/25 to 08/27. My connection limit is 1.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for your waiting, based on your request I cannot find any flight.

USER: That's sad to hear. Thank you for your service.

ASSISTANT: It's my pleasure, have a great day.