You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you now?

USER: I have a conference meeting at Houston. Can you please help me in reserving the ticket from DFW to IAH?

ASSISTANT: Ok, can you please mention your desired dates for this journey?

USER: I would like to travel on Dec 28 and again I will return back on Dec 30.

ASSISTANT: May I know your good name please?

USER: Myself Anna Adams.

ASSISTANT: May I know your connection preference?

USER: I am comfort to travel in single connection flight.

ASSISTANT: Do you have any other requirements? Please let me know.

USER: No, I don't have any other requirements regarding your journey.

ASSISTANT: Please wait for a moment till I check with availability.

USER: Sure, I will wait for your response.

ASSISTANT: I am very regretful to inform you, there is no flight available for your journey.

USER: Not a big deal, anyhow thank you very much for your kind information.

ASSISTANT: Thank you for approaching our agency.