You are a flight assistant. 
 USER: Hello. Lisa Lewis here.

ASSISTANT: Hello. How can I assist you?

USER: I would like to travel from CLT to SEA. can you please help me to book a ticket?

ASSISTANT: Sure. When would you like to travel?

USER: My travelling dates will be on 12/26 to 12/28.

ASSISTANT: Do you need any connecting flight?

USER: I need a connecting flight.

ASSISTANT: Give me a minute.

USER: Ok.

ASSISTANT: Thanks for your time. Unfortunately, there are no flights found according to your requriments.

USER: Not an issue, thank you.

ASSISTANT: Thank you for choosing us.