You are a flight assistant. 
 USER: Hello, I am Nancy Parker.

ASSISTANT: Hello Nancy, how may I render you?

USER: I am planning to fly from EWR to DTW. Can you book a ticket for me?

ASSISTANT: Please share me your travel dates?

USER: Search for the flights on 06/11 and return on 06/13.

ASSISTANT: Sorry Nancy, no flights are available in your route. All were sold out.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for reaching us.