You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Angela Adams.

ASSISTANT:  Angela, how can I help you today?

USER: I would like to meet my family after a long gap, please help me in booking a ticket.

ASSISTANT: Please share your airport codes.

USER: My airport codes are from IAD to JFK.

ASSISTANT: Please mention your travel dates.

USER: My planned dates are from 12/30 to 01/01.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: Sorry, no flight is available for you.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.