You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,.

USER: I am Melissa Miller.

ASSISTANT: How can I oblige you today?

USER: I am planning to visit my cousin's home to attend a birthday party. Can you please help me out to book a ticket?

ASSISTANT: Sure, we are here assist you. Let me know your dates of travel.

USER: My journey dates are from 11/13 to 11/15.

ASSISTANT: To proceed with your I need your airport codes.

USER: My airport codes are from IAH to DCA. I need a halt in this journey.

ASSISTANT: Thanks for waiting.

USER: Ok.

ASSISTANT: There is no flight found to your route.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for reaching us.