You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you help me to book a ticket from the airport CLT to DCA?

ASSISTANT: Sure, may I know your name?

USER: Ok, please book the ticket in the name Richard Hall.

ASSISTANT: Thank you. Could I know your travel dates?

USER: My dates of journey are Dec 7th and Dec 9th.

ASSISTANT: Noted. May I know your departure and arrival timings?

USER: There is no desired timing for this journey.

ASSISTANT: Ok, do you have any specifications?

USER: Yes, please book a connecting flight.

ASSISTANT: Noted. Please wait, let me check.

USER: Ok, please take your own time. I will wait.

ASSISTANT: Sorry, there is no flight available as per your requirements.

USER: That is not a problem, thank you for assisting me.

ASSISTANT: You are welcome and thank you for choosing us.