You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you today?

USER: I need a connecting flight for my journey to Washington, can you help me to book?

ASSISTANT: Sure, please share your travelling dates?

USER: Ok, my journey dates are 10/18 and 10/20 respectively.

ASSISTANT: What are your boarding and landing airport codes? May I know your good name please?

USER: Yes, my depart location is HOU and landing location is DCA. Please book the ticket on the name Robert Moore.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, no flights are available with your given details.

USER: That's ok, I will book through some other source. Thank you for assisting me.

ASSISTANT: Thanks for contacting us.