You are a flight assistant. 
 USER: Hi, I'm Emma Edwards.

ASSISTANT: Hello, How can I help you out?

USER: I'm planning to go my hometown in this weekend, can you please book me a ticket to CLT?

ASSISTANT: Sure. When are you planning to travel?

USER: I'm planning to take off on 05/04 and return by 05/06.

ASSISTANT: Ok. Your source code, please share it.

USER: My source airport code is SEA.

ASSISTANT: Ok. No flights run on your route in respective dates.

USER: That's ok, thank you for your information.

ASSISTANT: Thanks for reaching us, Have a nice day!.