You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I oblige you today?

USER: Can you aid me in booking flight ticket from BOS to IAD?

ASSISTANT: Sure, may I know your good name?

USER: I am Sandra Hall.

ASSISTANT: Could I have your travel dates, please?

USER: I prefer to depart on Nov 1st and return on Nov 3rd.

ASSISTANT: Please let me know your connection limit?

USER: I want a connecting flight for this journey.

ASSISTANT: Do you have any other preferences?

USER: I would like to return in the afternoon.

ASSISTANT: Ok, please wait for a minute.

USER: Ok.

ASSISTANT: Sorry, there are no flights available as per your requirements.

USER: Ok, that's ok. Thank you.

ASSISTANT: Thank you for reaching us.