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

ASSISTANT: Hello, how may I help you?

USER: I would like to visit Discovery Place in Charlotte, so could you please book a ticket for me?

ASSISTANT: Sure. Please send your travel dates.

USER: I would like to go on 09/14 and return back on 09/16.

ASSISTANT: Can I have your nearby airport codes? Please wait for a moment.

USER: My source and destination airport codes are SFO and CLT.

ASSISTANT: Ok.

USER: Ensure it is a single connecting flight.

ASSISTANT: There is no flights available on your required dates.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us.