You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you help me to book a flight ticket in my preferable travel dates May, 5 and May, 7?

ASSISTANT: Sure, may I know your source and destination airport codes?

USER: My source and destination airport codes are LAX and SEA.

ASSISTANT: May I know your connection limit?

USER: I am looking for single connection.

ASSISTANT: Do you have any other specifications?

USER: No, thanks.

ASSISTANT: May I know your name please?

USER: My name is Frank Martinez.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: That's ok, no issues. Thank you for the information.

ASSISTANT: Thank you for opting us.