You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Edward Perez.

ASSISTANT: How can I help you?

USER: Can you please book a flight ticket from BOS to CLT?

ASSISTANT: Please provide your travel dates.

USER: My journey dates are Aug 20 and Aug 22.

ASSISTANT: Do you have any preferences?

USER: I need a single connecting flight which returns in the morning.

ASSISTANT: Sorry, I did not find any flights for you.

USER: Ok, not a problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.