You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Can you please book a ticket from LGA to IAD to attend Client meeting?

ASSISTANT: Sure, I am here to help you.May I know your planned travelling dates please?

USER: My journey dates are July 6 and July 8.

ASSISTANT: For further proceeding, may I know your good name please?

USER: I am Nancy Garcia.

ASSISTANT: If you have any specifications please let me know, I will check availability of flights according to that?

USER: My depart time is morning.

ASSISTANT: Sorry to inform you that, there is no flight found as per your travelling details.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for reaching us.