You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I want to reserve my ticket which is direct for me to travel, can you please help me out?

ASSISTANT: Please share me your source and destination codes.

USER: Sure, my planned airports codes are from DFW to PHX.

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: Ok, my planned dates of journey are from Jun, 29 to Jul, 01.

ASSISTANT: Give me a moment.

USER: Sure, but I need a depart time which is at morning.

ASSISTANT: Sorry, no flight found departing in the morning.

USER: Ok, not an issue.

ASSISTANT: Can I know your name?

USER: Sure, my name is Catherine Carter.

ASSISTANT: Thank you for contacting us.

USER: Thank you for your service.